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3-epi Ursolic acid is a pentacyclic triterpenoid that has been found in M. lingua and has diverse biological activities. It inhibits glycogen phosphorylase and cathepsin L but not cathepsin B (IC50s = 19, 6.5, and >250 µM, respectively). 3-epi Ursolic acid (20-50 µM) inhibits entry of bovine parainfluenza virus 3 into MDBK cells. It also inhibits the proliferation of MCF-7 breast cancer cells (IC50 = 18.6 µg/ml).Formal Name: 3alpha-hydroxy-urs-12-en-28-oic acid. CAS Number: 989-30-0. Synonyms: 3-Epiursolic Acid, alpha-Ursolic Acid. Molecular Formula: C30H48O3. Formula Weight: 456.7. Purity: >98%. Formulation: (Request formulation change), A solid. Solubility: DMSO: soluble. SMILES: OC([C@]12[C@]([C@H]([C@@H](CC2)C)C)([H])C3=CC[C@@]([C@@]4([C@@](C(C)([C@@H](CC4)O)C)([H])CC5)C)([H])[C@]5(C)[C@@]3(CC1)C)=O. InChi Code: InChI=1S/C30H48O3/c1-18-10-15-30(25(32)33)17-16-28(6)20(24(30)19(18)2)8-9-22-27(5)13-12-23(31)26(3,4)21(27)11-14-29(22,28)7/h8,18-19,21-24,31H,9-17H2,1-7H3,(H,32,33)/t18-,19+,21+,22-,23-,24+,27+,28-,29-,30+/m1/s1. InChi Key: WCGUUGGRBIKTOS-XHINXETDSA-N. Origin: Plant/Eriobotrya japonica (Thunb.) Lindl..
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