Silibinin, CAS#22888-70-6, formerly known as silybin, contains both A and B diastereomers. Silibinin is the major active constituent of silymarin, standardized extract of the milk thistle seeds, containing mixture of flavonolignans consisting of among others of silibinin, isosilibinin, silicristin and silidianin. Silibinin itself is mixture of two diastereomers Silibinin A and Silybinin B in approximately equimolar ratio. Both in vitro and animal research suggest that silibinin has hepatoprotective (antihepatotoxic) properties that protect liver cells against toxins. References: Kaur M, Velmurugan B, Tyagi A, Agarwal C, Singh RP, Agarwal R. Silibinin suppresses growth of human colorectal carcinoma SW480 cells in culture and xenograft through down-regulation of beta-catenin-dependent signaling. Neoplasia. 2010 May;12(5):415-24. PubMed PMID: 20454513; PubMed Central PMCID: PMC2864479.

纯度：≥98%

CAS：22888-70-6