Product name: NHS-PEG-OPSS

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 / off white liquid, semi-solid or solid, depending on the molecular weight of PEG.

Common solvents：water，CHCl3，DMSO.

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!

Nhs-peg-opss, mercaptopyridine reacts with free mercapto groups in the range of pH 4.5 ~ 8.5 to form disulfide bonds and release pyridine rings. The active ester at the other end can form a stable amide bond with amino group, and polyethylene glycol can increase solubility and stability and reduce the nonspecific binding on the surface of charged molecules. O-pyridyl disulfide (OPSS) - functionalized polyethylene glycol (opss-peg) is a peg derivative with sulfhydryl activity, which can modify biomolecules or other materials through its sulfhydryl group. O-pyridyl disulfide reacts with sulfhydryl group to form a stable disulfide bond and release a sulfhydryl pyridyl group at the same time.