Patent ID: 9446067
Filing Date: 2016-09-20
CPC Classification: A61K,A61L,A61P,C08B,C08F,C08J,C08L

Claim Text:
1. A mercapto-modified biocompatible macromolecule derivative with a low degree of mercapto-modification, the mercapto-modified biocompatible macromolecule derivative comprises: at least three mercapto groups in its side chain and having a degree of mercapto-modification of ≦4.5%; wherein the mercapto-modified biocompatible macromolecule derivative is obtained by chemically introducing the mercapto group into the side-chain group of the biocompatible macromolecule; and further wherein the degree of mercapto-modification is a percentage of an amount of the introduced mercapto group in an amount of available side-chain group of the biocompatible macromolecule for modification; and further wherein the biocompatible macromolecule is chondroitin sulfate or hyaluronic acid, or the salts and derivatives thereof.