PEG

m-PEG-SPDP, MW 2,000 is a water soluble PEG polymer with SPDP moiety. It is reactive with thiol to form disulfides molecule. Reagent grade, for research purpose.

m-PEG-SPDP, MW 5,000 is a pyridyldithio functional polymer which is reactive with thiol, sulfhydryl, or mercapto to form a cleavable disulfide bond. The PEG chain helps ehancing water solubility of the compound. Reagent grade, for research purpose.

PEG-bis-amido-Succinic Acid, MW 20,000 is a homobinfunctional PEG polymer with carboxylic acid terminals which is reactive with amines to form covalent amide bonds in the presence of activator, such as HATU or EDC. Reagent grade, for research purpose.

PEG-bis-amido-Succinic Acid, MW 3,400 is a dicarboxylic acids PEGylation reagent which can react with primary NH2 in the presence of activator (e.g. EDC or HATU) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose.

PEG-bis-Butyraldehyde, MW 3,400 is a PEG polymer with two aldehyde groups and is reactive with hydrazide or amine group to form a stable hydrazone or imine bond respectively. Reagent grade, for research purpose.

PEG-bis-CH2CO2H, MW 1,000 is a homobifuctional carboxylic acid PEG polymer which can react with primary amines in the presence of activator, such as EDC or HATU, to form a stable amide bond. Reagent grade, for research purpose.

PEG-bis-CH2CO2H, MW 2,000 is a linear polyPEG with carboxylic acids which can undergo condensation reaction with amine to form an amide covalent linkage in the presence of activator, such as HATU or EDC. Reagent grade, for research purpose.

PEG-bis-Hydrazide, MW 3,400 can react with aldhedydes in glycosilated molecules at pH 5 to 7 via hydrazone bond formation. The efficiency of hydrazide-aldehyde coupling can also be enhanced by using aniline (also called GlycoLink Coupling) as a catalyst. Reagent grade, for research purpose.

PEG-bis-Nitrophenyl Carbonate, MW 2,000 is an amino reactive polyPEG for modification of protein, antibody, peptide, or amino molecule. Reagent grade, for research purpose.