PEG

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.

PEG-bis-SPDP, MW 10,000 is homobifunctional water soluble polymer which is reactive rapidly with thiol containing molecule. Reagent grade, for research purpose.

PEG-bis-SPDP, MW 2,000 is a pyridyl disulfide modified polyPEG which can react with thiol moiety to produce a new disulfide bond and generating unreactive pyridine-2-thione as a by product. The newly-formed disulfide bond can be cleaved with a reducing agent such as dithiothreitol (DTT). Reagent grade, for research purpose.

PEG-bis-SPDP, MW 3,400 can react with thiols to form disulfide bonds. Reagent grade, for research purpose.