3-Oxo-URS-12-en-28-oic acid methyl ester

Ursonic acid methyl ester is an esterified derivative of Ursolic acid (HY-N0140). Ursonic acid methyl ester shows growth inhibitory activity against four tumor cell lines, HL-60, BGC, Bel-7402 and Hela with ED50 values of >100 μg/ml[1].

[1] Chao-Mei Ma, et al. The cytotoxic activity of ursolic acid derivatives. Eur J Med Chem. 2005 Jun;40(6):582-9. DOI:10.1016/j.ejmech.2005.01.001