MF: C13H21NO15S MW: 463.37g/mol

https://pubchem.ncbi.nlm.nih.gov/compound/24766

Chondroitin sulfate is a sulfated glycosaminoglycan (GAG) composed of a chain of alternating sugars (N-acetylgalactosamine and glucuronic acid).
It is usually found attached to proteins as part of a proteoglycan.
A chondroitin chain can have over 100 individual sugars, each of which can be sulfated in variable positions and quantities.
Chondroitin sulfate is an important structural component of cartilage and provides much of its resistance to compression.

硫酸軟骨素是一種硫酸化的糖胺聚醣(GAG)，由一系列交替的糖(N-乙醯半乳糖胺和葡萄醣醛酸)組成。
通常發現它作為蛋白聚醣的一部分附著在蛋白質上。
軟骨素鏈可以包含100多個單獨的糖，每個糖都可以不同的位置和數量進行硫酸化。
硫酸軟骨素是軟骨的重要結構組成部分，並具有很大的抗壓能力。

https://en.wikipedia.org/wiki/Chondroitin_sulfate