Product name : COOH-PEG-SH

Product specification:1g、5g(Customized according to requirements）

PEG molecular weight：1K,2K,3.4k, 5K, 10K, 20K, 40K

Product description：

CAS NO:--

Molecular formula：--

Appearance：White or yellow liquid, semi-solid or solid, depending on the molecular weight of PEG

Common solvents：10mg / ml water, CHCl3, dimethyl sulfoxide.

Reminder：

In order to obtain the best use effect of the product, the material should always be kept at a low temperature under dry conditions to avoid frequent thawing and freezing. 

To ensure the stability of the product, please note that the package can only be opened after constant temperature drying!

Mercaptan peg carboxyl group (hs-peg-cooh) is one of the reactive mercaptan PEG derivatives with terminal carboxyl group of melopeg. Carboxyl peg sulfhydryl group (hooc-peg-sh) can be used to modify proteins, peptides, other materials or small molecules.

Carboxyl group can react with amine or hydroxyl group to form stable amide bond or unstable ester bond. The reaction of carboxyl group allows amine or hydroxyl group to be transformed into free mercaptan through linear peg linker. The obtained sulfhydryl group can be used to modify the surface of gold nanoparticles or participate in other PEGylation reactions. The peg linker between sulfhydryl group and carboxyl group provides good hydrophilicity.