NH-bis(PEG1-azide) is a PEG derivative containing an amino group with two azide groups. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls. The azide groups enable PEGylation via Click Chemistry.

Azido-PEG3-methyl ester is a crosslinker containing an azide group and a methyl ester. The azide group enables Click Chemistry. The hydrophilic PEG spacer increases solubility in aqueous media.

azido-tris(ethylenoxy)-L-alanine TFA Salt is a PEG Linker.

N-Boc-Azido-tris(ethylenoxy)-L-alanine is a PEG Linker.

Azido-PEG2-t-butyl ester is a PEG derivative containing an azide group and a t-butyl ester. 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 t-butyl protected carboxyl group can be deprotected under acidic conditions.

Azido-PEG8-PFP ester is a PEG derivative containing an azide group and a PFP group. The azide group enables Click Chemistry. The PFP ester is a better leaving group compared to a hydroxyl group and can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer adds to the water solubility of this reagent.

Azido-PEG3-succinimidyl carbonate is a PEG Linker

3-Azidopropionic Acid Sulfo-NHS Ester is a water-soluble compound containing an azide group and an NHS ester. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

Ald-Ph-PEG3-O-NH-Boc is a PEG Linker.

Ald-Ph-PEG2-amine TFA salt is a PEG Linker.

Ald-CH2-PEG4-CH2CO2tBu is a PEG Linker.

Ald-Ph-PEG6-t-butyl ester is a PEG Linker.

Ald-PEG1-t-butyl ester is a PEG Linker.

Ald-Ph-PEG6-acid is a PEG Linker. PEG Linkers and derivatives may be useful in the development of antibody drug conjugates.

Active-Mono-Sulfone-PEG8-acid is a PEG Linker.

Acid-PEG5-TEMPO is a PEG Linker.

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-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-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.

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.

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-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-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.

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-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.

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.

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.

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-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-PEG9-t-butyl ester is a PEG derivative containing a hydroxyl group with a t-butyl ester. The hydrophilic PEG spacer increases solubility in aqueous media. The hydroxyl group enables further derivatization or replacement with other reactive functional groups. The t-butyl protected carboxyl group can be deprotected under acidic conditions.