PEG

Biotin-PEG-CH2CO2H, MW 5,000 is a linear polydisperse PEG for biotinylation. The PEG derivative can strongly bind with avidin/streptavidin and used for non-radioactive labeling as well as purification of proteins and other target molecules. The carboxyl (-COOH) can react with an amine (-NH2) in the presence of activating agent (HATU or EDC) to from a stable amide bond. Reagent grade, for research purpose.

Biotin-PEG-CH2CO2H, MW 10,000 is a caboylic acid functional polyPEG used for biotinylation due to its strong binding with avidin/streptavidin. The carboxylic acid moiety can react with protein/peptide or other amine moleule in the presence of activator, such as HATU or EDC. Reagent grade, for research purpose.

Biotin-PEG-Mal, MW 1,000 is a thiol reactive biotinylated PEG derivative. Reaction between maleimide and thiol molcule forms a thioether bond. Reagent grade, for research purpose.

Biotin-PEG-Mal, MW 2,000 is a linear maleimide containing polyPEG which can strongly bind with proteins, such as avidin or streptavidin. The maleimide is reactive with cysteine or other thiol molecule to form thiosuccinimide molecule. Reagent grade, for research purpose.

Biotin-PEG-Mal, MW 7,500 is a PEG derivative with terminal biotin. Biotinylated polymer can strongly bind to proteins, such as avidin/streptavidin and is used for non-radioactive labeling as well as purification of proteins and other target molecules. The terminal maleimide is reactive with thiol containing molecule to generate a stable thioether bond. Reagent grade, for research purpose.

Thiol-PEG-OH, MW 1,000 is a hydroxylated PEG polymer which is reactive with maleimide to generate a covalent thiother bond. The terminal hydroxyl can further derivatize to other molecule. Reagent grade, for research purpose.

HO-PEG-NHS ester, MW 2,000 is a linear heterobifunctional polydisperse PEG with a succinimidyl ester. The polymer can couple with amino containing molecule to form an amide bond. Reagent grade, for research purpose.

HO-PEG-CH2CO2-NHS, MW 3,400 is an amine reactive PEGylation reagent. The coupling between amine and NHS ester forms a stable amide bond. The hdyroxyl moiety can further derivatize the compound. Reagent grade, for research purpose.

HO-PEG-NHS ester, MW 5,000 can react with protein/peptide or other amino molecule via formation of a stable amide bond. The hydroxyl group can further derivatize to other compound. Reagent grade, for research purpose.