N-(Azido-PEG3)-N-Boc-PEG4-NHS ester is a branched PEG derivative with a terminal azide group, Boc protected amino group, and a terminal NHS ester. The azide group enables PEGylation via Click Chemistry. The protected amine can be deprotected by acidic conditions. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

N-(Azido-PEG2)-N-Boc-PEG4-NHS ester is a branched PEG derivative with a terminal azide group, Boc protected amino group, and a terminal NHS ester. The azide group enables PEGylation via Click Chemistry. The protected amine can be deprotected by acidic conditions. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

N-(Azido-PEG2)-N-Boc-PEG3-NHS ester is a branched PEG derivative with a terminal azide group, Boc protected amino group, and a terminal NHS ester. The azide group enables PEGylation via Click Chemistry. The protected amine can be deprotected by acidic conditions. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

N-(Azido-PEG3)-N-bis(PEG3-NHS ester) is a branched PEG derivative with a terminal azide group and two terminal NHS esters. The azide group enables PEGylation via Click Chemistry. The NHS esters can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

N-(Azido-PEG3)-N-Boc-PEG4-acid is a branched PEG derivative with a terminal azide group, Boc protected amino group, and a terminal carboxylic acids. The azide group enables PEGylation via Click Chemistry. The protected amine can be deprotected by acidic conditions. The terminal carboxylic acid can be reacted with primary amino groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

N-(Azido-PEG3)-N-Boc-PEG3-acid is a branched PEG derivative with a terminal azido group, Boc protected amino group, and a terminal carboxylic acid. The azide group enables PEGylation via Click Chemistry. The protected amine can be deprotected by acidic conditions. The terminal carboxylic acid can be reacted with primary amino groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

N-(Azido-PEG2)-N-Boc-PEG4-acid is a branched PEG derivative with a terminal azido group, Boc protected amino group, and a terminal carboxylic acid. The azide group enables PEGylation via Click Chemistry. The protected amine can be deprotected by acidic conditions. The terminal carboxylic acid can be reacted with primary amino groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

N-(Azido-PEG2)-N-Boc-PEG3-acid is a branched PEG derivative with a terminal azide group, Boc protected amino group, and a terminal carboxylic acids. The azide group enables PEGylation via Click Chemistry. The protected amine can be deprotected by acidic conditions. The terminal carboxylic acid can be reacted with primary amino groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

2-(Azido-PEG3-amido)-1,3-bis(carboxylethoxy)propane is a branched PEG derivative with a terminal azide group and two terminal carbozylic acids. The azide group enables PEGylation via Click Chemistry. The terminal carboxylic acids can be reacted with primary amino groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

N-(Azido-PEG4)-N-bis(PEG4-acid) HCl salt is a branched PEG derivative with a terminal azide group and two terminal carboxylic acids. The azide group enables PEGylation via Click Chemistry. The terminal carboxylic acids can be reacted with primary amino groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

N-(Azido-PEG3)-N-bis(PEG4-acid) is a branched PEG derivative with two terminal caboxylic acids and a terminal azide group. The azide group enables PEGylation via Click Chemistry. The terminal carboxylic acids can be reacted with primary amino groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

N-(Azido-PEG3)-N-bis(PEG3-acid) HCl salt is a branched PEG derivative with two terminal caboxylic acids and a terminal azide group. The azide group enables PEGylation via Click Chemistry. The terminal carboxylic acids can be reacted with primary amino groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

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.