Azido-PEG9-alcohol is a PEG derivative containing an azide group and a terminal hydroxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

Azido-PEG10-alcohol is a PEG derivative containing an azide group and a terminal hydroxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

Azido-PEG11-alcohol is a PEG derivative containing an azide group and a terminal hydroxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

Azide-PEG12-alcohol is a PEG derivative containing an azide group and a terminal hydroxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

3-(Azido-PEG5-amino)propanol is a PEG Linker.

m-PEG3-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG5-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG6-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG7-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG8-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG9-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG10-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG12-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG3-(CH2)3-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-(CH2)3-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG7-(CH2)3-alcohol is a PEG derivative containing a hydroxyl group. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The hydrophilic PEG spacer increases solubility in aqueous media.

TBDMS-PEG5 is a PEG derivative which may be useful in the development of antibody drug conjugates.

THP-PEG3 is a PEG derivative that may be useful in the development of antibody drug conjugates.

THP-PEG4 is a PEG derivative. PEG derviatives may be useful in the development of antibody drug conjugates.

THP-PEG5 is a PEG linker.

THP-PEG6 is a PEG derivative. PEG derivatives may be useful in the development of antibody drug conjugates.

THP-PEG9 is a PEG Linker.

THP-PEG12 is a PEG linker.

THP-PEG8-Tos is a PEG linker. The PEG linker contains 7 units of ethylene glycol.

Tr-PEG3 is a PEG derivative.

Tr-PEG5 is a PEG derivative.

Triethylene glycol is a PEG linker. PEG Linkers may be useful in the development of antibody drug conjugates.

Tetraethylene glycol is a PEG linker. PEG linkers may be useful in the development of antibody drug conjugates.

Pentaethylene glycol is a PEG Linker. PEG Linkers may be useful int he development of antibody drug conjugates.

Hexaethylene glycol is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

Heptaethylene glycol is a PEG Linker.

Octanethyl glycol is a PEG Linker.

Nonaethylene glycol is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

PEG12 is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

PEG13 is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

PEG15 is a PEG Linker.

PEG16 is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

PEG17 is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

PEG18 is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

PEG21 is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

PEG22 is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

PEG25 is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

Hydroxy-PEG1-methyl ester is a PEG derivative containing a hydroxyl group and a methyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. Methyl ester can be hydrolyzed under strong basic condition.

Hydroxy-PEG2-methyl ester is a PEG derivative containing a hydroxyl group and a methyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. Methyl ester can be hydrolyzed under strong basic condition.

Hydroxy-PEG3-methyl ester is a PEG derivative containing a hydroxyl group and a methyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. Methyl ester can be hydrolyzed under strong basic condition.

Hydroxy-PEG4-methyl ester is a PEG derivative containing a hydroxyl group and a methyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. Methyl ester can be hydrolyzed under strong basic condition.

Hydroxy-PEG5-methyl ester is a PEG derivative containing a hydroxyl group and a methyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. Methyl ester can be hydrolyzed under strong basic condition.

Hydroxy-PEG3-acrylate is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

Hydroxy-PEG4-nitrile is a PEG Linker containing a nitrile group. PEG Linkers may be useful in the development of antibody drug conjugates.

1-isothiocyanato-PEG4-Alcohol is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

N-Me-N-bis(PEG3-OH) is a branched PEG derivative with two terminal hydroxyl groups. The hydroxy groups enable further derivatization or replacement with other reactive functional group.

NH-bis(PEG2-OH) is a branched PEG derivative with a central amino group and two terminal hydroxyl groups. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls, etc. The hydroxy groups enable further derivatization or replacement with other reactive functional groups.

NH-bis(PEG3-OH) is a branched PEG derivative with a central amino group and two terminal hydroxyl groups. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls, etc. The hydroxy groups enable further derivatization or replacement with other reactive functional groups.

NH-bis(PEG4-OH) is a branched PEG derivative with a central amino group and two terminal hydroxyl groups. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls, etc. The hydroxy groups enable further derivatization or replacement with other reactive functional groups.

N-(PEG1-OH)-N-Boc-PEG2-propargyl is a branched PEG derivative with a terminal hydroxy group, propargyl group, and a Boc protected amino group. The hydroxy group enables further derivatization or replacement with other reactive functional groups. The propargyl group can be reacted with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield a stable triazole linkage. The protected amine can be deprotected by acidic conditions.

2-(Azido-PEG2-amido)-1,3-propandiol is a multi-arm PEG with azide or hydroxyl at the terminal of all arms. The azide group enables Click Chemistry. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

Azido-PEG4-Amido-Tris, also known as Azido-PEG4-Amido-tri-(carboxyethoxymethyl)-methane, is a multi-arm PEG containing an azide group and three hydroxyl groups. The azide group enables Click Chemistry. The indicated molecular weight of the multi-arm PEG is the sum of the molecular weights of all the arms. The hydroxyl group enables further derivatization or replacement with other reactive functional groups.

Hydroxy-Amino-bis(PEG1-t-butyl ester) is a branched PEG derivative with a terminal hydroxy group and two t-butyl esters. The hydroxy group enables further derivatization or replacement with other reactive functional groups. The t-butyl protected carboxyl groups can be deprotected under mild acidic conditions.

N-(Hydroxy-PEG3)-N-bis(PEG4-t-butyl ester) is a branched PEG derivative with a terminal hydroxy group and two t-butyl esters. The hydroxy group enables further derivatization or replacement with other reactive functional groups. The t-butyl protected carboxyl groups can be deprotected under mild acidic conditions.

Tri(t-butoxycarbonylethoxymethyl) ethanol is a branched PEG derivative with a terminal hydroxy group and three t-butyl esters. The hydroxy group enables further derivatization or replacement with other reactive functional groups. The t-butyl protected carboxyl groups can be deprotected under mild acidic conditions.

T-Butyl 1,3-dihydroxypropan-2-ylcarbamate is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

N-(Boc-PEG3)-N-bis(PEG2-alcohol) is a branched PEG derivative with two terminal hydroxy groups and a Boc protected amino group. The hydroxy groups enable further derivatization or replacement with other reactive functional groups. The protected amines can be deprotected by acidic conditions.

N-(Hydroxy-PEG3)-N-Boc-PEG4-t-butyl ester is a branched PEG derivative with a terminal hydroxy group, t-butyl ester, and a Boc protected amino group. The hydroxy group enables further derivatization or replacement with other reactive functional groups. The t-butyl protected carboxyl group can be deprotected under mild acidic conditions. The protected amine can be deprotected by acidic conditions.

N-Benzyl-N-bis(PEG1-OH) is a PEG Linker

N-Benzyl-N-bis(PEG3-OH) is a PEG Linker

m-PEG1-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG2-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG3-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG5-acid containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG6-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG7-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG9-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG10-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG11-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG12-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG13-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG3-acid chloride is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG9-CH2COOH is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-(CH2)3-acid is a PEG derivative containing a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG1-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG3-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG5-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG6-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG7-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG8-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG9-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG10-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG11-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG12-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG3-t-butyl ester is a PEG derivative containing a t-butyl ester. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-t-butyl ester is a PEG derivative containing a t-butyl ester. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG5-t-butyl ester is a PEG derivative containing a t-butyl ester. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG7-t-butyl ester is a PEG derivative containing a t-butyl ester. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG8-t-butyl ester is a PEG derivative containing a t-butyl ester. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG9-t-butyl ester is a PEG Linker.

m-PEG10-t-butyl ester is a PEG Linker.

m-PEG12-t-butyl ester is a PEG derivative containing a t-butyl ester. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG2-azide is a PEG derivative containing an azide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG3-azide is a PEG derivative containing an azide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-azide is a PEG derivative containing an azide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG5-azide is a PEG derivative containing an azide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG6-azide is a PEG derivative containing an azide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG7-azide is a PEG derivative containing an azide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG8-azide is a PEG derivative containing an azide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG10-azide is a PEG derivative containing an azide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG11-azide is a PEG Linker

m-PEG12-azide is a PEG derivative containing an azide group. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-Mal is a PEG derivative containing a maleimide group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG6-Mal is a PEG derivative containing a maleimide group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG8-Mal is a PEG derivative containing a maleimide group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG12-Mal is a PEG derivative containing a maleimide group. The maleimide group will react with a thiol group to form a covalent bond, enabling the connection of biomolecule with a thiol. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG3-aldehyde is a PEG derivative containing an aldehyde group. Aldehyde is reactive to hydrazide and aminooxy groups which are commonly used in biomolecular probes for labeling and crosslinking carbonyls (oxidized carbohydrates). The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-aldehyde is a PEG derivative containing an aldehyde group. Aldehyde is reactive to hydrazide and aminooxy groups which are commonly used in biomolecular probes for labeling and crosslinking carbonyls (oxidized carbohydrates). The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG12-aldehyde is a PEG derivative containing an aldehyde group. Aldehyde is reactive to hydrazide and aminooxy groups which are commonly used in biomolecular probes for labeling and crosslinking carbonyls (oxidized carbohydrates). The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-CH2-aldehyde is a PEG derivative containing an aldehyde group. Aldehyde is reactive to hydrazide and aminooxy groups which are commonly used in biomolecular probes for labeling and crosslinking carbonyls (oxidized carbohydrates). The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG4-Tos is a PEG derivative containing a tosyl group. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG5-Tos is a PEG derivative containing a tosyl group. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG6-Tos is a PEG derivative containing a tosyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The tosyl group is a very good leaving group for nucleophilic substitution reactions.

m-PEG7-Tos is a PEG derivative containing a tosyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The tosyl group is a very good leaving group for nucleophilic substitution reactions.

m-PEG8-Tos is a PEG derivative containing a tosyl group. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media. The PEG linker contains 7 units of ethylene glycol.

m-PEG9-Tos is a PEG derivative containing a tosyl group. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media. The PEG linker contains 8 units of ethylene glycol

m-PEG10-Tos is a PEG derivative containing a tosyl group. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG11-Tos is a PEG derivative containing a tosyl group. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG3-Ms is a PEG derivative containing a mesyl group. The mesyl group is a good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG13-Ms is a PEG Linker

m-PEG5-thiol is a PEG derivative containing a thiol group. The thiol group reacts with maleimide, OPSS, vinylsulfone and transition metal surfaces including gold, silver, etc. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG6-thiol is a PEG derivative containing a thiol group. The thiol group reacts with maleimide, OPSS, vinylsulfone and transition metal surfaces including gold, silver, etc. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG8-thiol is a PEG derivative containing a thiol group. The thiol group reacts with maleimide, OPSS, vinylsulfone and transition metal surfaces including gold, silver, etc. The hydrophilic PEG spacer increases solubility in aqueous media.

m-PEG3-S-Acetyl is a PEG Linker. PEG Linkers may be useful in the development of antibody drug conjugates.

NHS-PEG4-(m-PEG4)3-ester is a branched PEG derivative with a terminal NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

m-PEG4-hydrazide is a PEG Linker.

m-PEG4-sulfonic acid is a PEG derivative

m-PEG5-sulfonic acid is a PEG derivative

m-PEG4-(CH2)3-methyl ester is a PEG Linker.

m-PEG3-4-nitrophenyl carbonate is a PEG derivative.

m-PEG7-4-nitrophenyl carbonate is a PEG Linker

m-PEG5-2-methylacrylate is a PEG derivative. PEG Linkers and derivatives may be useful in the development of antibody drug conjugates.

m-PEG6-2-methylacrylate is a PEG Linker.

m-PEG5-nitrile is a PEG Linker.

m-PEG3-triethoxysilane is a PEG Linker containing silicon.

m-PEG5-triethoxysilane is a PEG derivative. PEG Linkers and derivatives may be useful in the development of antibody drug conjugates.

Methylamino-PEG1-acid HCl salt is a PEG derivative containing a carboxylic acid with a methylamine group. The hydrophilic PEG spacer increases solubility in aqueous media. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Methylamino-PEG2-acid HCl salt is a PEG derivative containing a carboxylic acid with a methylamine group. The hydrophilic PEG spacer increases solubility in aqueous media. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Methylamino-PEG4-acid HCl salt is a PEG derivative containing a carboxylic acid with a methylamine group. The hydrophilic PEG spacer increases solubility in aqueous media. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Methylamino-PEG1-t-butyl ester is a PEG derivative containing a methylamine group and a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Methylamino-PEG2-t-butyl ester is a PEG derivative containing a methylamine group and a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Methylamino-PEG4-t-butyl ester is a PEG derivative containing a methylamine group and a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

N-Me-N-bis(PEG4-t-butyl ester), is a PEG derivative containing a methylamine group and a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Methylamino-PEG3-azide is a PEG derivative containing an azide group with a methylamine group. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc.

Methylamino-PEG5-azide is a PEG derivative containing an azide group and a methylamino group. The azide group enables Click Chemistry. The methylamine group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The hydrophilic PEG spacer increases solubility in aqueous media.

Hydroxy-PEG1-methylamine is a PEG derivative containing a hydroxyl group with a methylamine group. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc.

Hydroxy-PEG2-methylamine is a PEG derivative containing a hydroxyl group with a methylamine group. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc.

Hydroxy-PEG3-methylamine is a PEG derivative containing a hydroxyl group with a methylamine group. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The methylamine group is reactive with carboxylic acids, carbonyls (ketone, aldehyde) etc.

Tetraethyl butane-1,4-diylbis(phosphonate) is a non-PEG crosslinker. Crosslinkers may be useful in the development of antibody drugconjugates.

Tetraethyl heptane-1,7-diylbis(phosphonate) is a non-PEG Crosslinker.

Tetraethyl octane-1,8-diylbis(phosphonate) is a non-PEG crosslinker.

Tetraethyl decane-1,10-diylbis(phosphonate) is a non-PEG crosslinker.

Butane-1,4-diyldiphosphonic acid is a crosslinker.

Hexane-1,6-diyldiphosphonic acid is a non-PEG crosslinker.

4-bromobutylphosphonic acid is a non-PEG crosslinker

6-Bromohexylphosphonic acid is a non-PEG Crosslinker.

diethyl 4-bromobutylphosphonate

diethyl 7-bromoheptylphosphonate is a PEG Linker.

diethyl 8-bromooctylphosphonate is a non-PEG Linker.

diethyl 10-bromodecylphosphonate is a non-PEG Linker.

diethyl 12-bromododecylphosphonate is a non-PEG Linker.

Alkynyl Myristic Acid is a non-PEG crosslinker which can be used to identify and characterize post-translational myristylated proteins with Click Chemistry.

Alkynyl Stearic Acid can be used to identify and characterize the post-translational acylation of proteins with powerful Click Chemistry.

1,7-Bis-Boc-1,4,7-Triazaheptane is a non-PEG crosslinker.

2-(t-Butoxycarbonylamido)-1,3-bis (t-butoxycarbonylethoxy)propane is a non-PEG crosslinker. Crosslinkers may be useful in the development of antibody drug conjugates.

N1,N1'-(1,4-phenylenebis(methylene))bis(N1-(2-aminoethyl)ethane-1,2-diamine) HCl salt

Azidobutyric acid NHS ester is a non-PEG Linker.

SPDP acid is a non-PEG crosslinker.

Sulfo-NHS is a chemical modification reagent for converting carboxyl groups to amine-reactive NHS esters for bioconjugation, crosslinking, labeling and immobilization methods.

N-(4-pentynoyl)-galactosamine tetraacylated (Ac4 GalNAl) is a biochemical.

N-azidoacetylmannosamine-tretraacylated (Ac4ManNAz) is a biochemical that may be used for in vivo cell labeling and tracking and, therefore, may be useful for cell-based therapy for monitoring the efficacy of molecule delivery and the fate of recipient cells.

L- Homopropargylglycine (HPG) HCl salt is an amino acid analog of methionine containing a very small modification. The alkyne moiety can be fed to cultured cells and incorporated into proteins during protein synthesis. The alkyne-modified protein is detected with either fluorescent azide or biotin azide.

L-Azidohomoalanine HCl salt is an amino acid analog that provides a fast, sensitive, non-toxic and non-radioactive alternative to the traditional radioactive 35S-methionine for the detection of nascent protein. L-azidohomoalaine contains a small modification and its azido moiety can be fed to cultured cells and incorporated into proteins during active protein synthesis.

tert-butyl 3-(4-(2-cyanoethynyl)phenylcarbamoyl)propylcarbamate is part of a new class of thiol-specific conjugation reagents consisting of a thiol-reactive 3-arylpropiolonitrile (APN) group. The APN group allows the targeted coupling of thiols in biomolecules, and results in stable thioether linkages without the risk of subsequent side reactions that can occur with maleimides.

4-amino-N-(4-(2-cyanoethynyl)phenyl)butanamide is part of a new class of thiol-specific conjugation reagents consisting of a thiol-reactive 3-arylpropiolonitrile (APN) group. The APN group allows the targeted coupling of thiols in biomolecules, and results in stable thioether linkages without the risk of subsequent side reactions that can occur with maleimides.

Azido-PEG1-acid is a PEG derivative containing an azide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Azido-PEG2-acid is a PEG derivative containing an azide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Azido-PEG6-acid is a PEG derivative containing an azide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Azido-PEG8-acid is a PEG derivative containing an azide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Azido-PEG10-acid is a PEG derivative containing an azide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Azido-PEG12-acid is a PEG derivative containing an azide group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Acid-PEG1-t-butyl ester is a PEG derivative containing a t-butyl protected carboxyl group with a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Acid-PEG2-t-butyl ester is a PEG derivative containing a t-butyl protected carboxyl group with a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Acid-PEG3-t-butyl ester is a PEG derivative containing a t-butyl protected carboxyl group with a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Acid-PEG4-t-butyl ester is a PEG derivative containing a t-butyl protected carboxyl group with a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Acid-PEG5-t-butyl ester is a PEG derivative containing a t-butyl protected carboxyl group with a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Acid-PEG6-t-butyl ester is a PEG derivative containing a t-butyl protected carboxyl group with a terminal carboxylic acid. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions.

Acid-PEG3-mono-methyl ester is a PEg derivative. PEG Linkers and derivatives may be useful in the development of antibody drug conjugates.

Acid-PEG4-mono-methyl ester is a PEG derivative.

Acid-PEG5-mono-methyl ester is a PEG derivative.

Acid-PEG6-mono-methyl ester is a PEG Linker

Carboxy-PEG2-sulfonic acid is a PEG Linker. PEG Linkers and derivatives may be useful in the development of antibody drug conjugates.

Carboxy-PEG4-sulfonic acid is a PEG Linker.