PEG

Bromoacetamido-PEG8-t-butyl ester is a PEG linker containing a bromide group and a t-butyl protected carboxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. The t-butyl protected carboxyl group can be deprotected under acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

m-PEG-OH, MW 2,000 is a aqueous soluble polyPEG with a terminal hydroxyl group which can be further derivatize to other molecules. Reagent grade, for research purpose.

m-PEG-OH, MW 5,000 is a hydroxyl PEG polymer which can be converted to other PEG derivatives. Reagent grade, for research purpose.

Propargyl-PEG4-S-PEG4-propargyl is a PEG linker containing two propargyl groups. The propargyl groups can react with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield stable triazole linkages. The hydrophilic PEG chains increase the water solubility of the compound in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

t-Butoxycarbonyl-PEG4-S-PEG4-t-butyl ester contains two t-butyl ester groups which can be removed under acidic conditions. The hydrophilic PEG spacer increases the water solubility of the compound. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Propargyl-PEG4-S-PEG4-t-butyl ester is a PEG linker containing a propargyl group and t-butyl group. The propargyl groups can react with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield stable triazole linkages. t-butyl ester is a better leaving group compared to a hydroxyl group. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Azido-PEG3-S-PEG4-t-butyl ester is a PEG linker containing one azide group and one t-butyl protected carboxyl group. The azide group enables Click Chemistry. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group (COOH) prevents self coupling or polymerization under standard acid/amine or acid/hydroxyl coupling conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Propargyl-PEG4-S-PEG4-acid is a PEG linker containing a propargyl group with a terminal carboxylic acid. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) forming a stable amide bond. The propargyl groups can react with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield stable triazole linkages. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Acid-PEG4-S-PEG4-acid contains two terminal carboxylic acid groups. The carboxylic acid groups can react with primary amines in the presence of activators such as EDC and HATU to form stable amide bonds. The hydrophilic PEG chains increase the water solubility of the compound in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.