m-PEG4-Tos is a derivative of silybin ethers, extracted from patent CN105037337A (compound III-b). m-PEG4-Tos is a PEG-based PROTAC linker can be used in the synthesis of Silymarin[1].

PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein.PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.

62921-76-0

C16H26O7S

362.44

m-PEG4-Tos

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years