CAS 10538-65-5 appears in our catalog under these names: (3a,5b,12a)-3,12-Dihydroxy-7-oxocholan-24-oic acid methyl ester, Methyl-7-keto-3a，12a-dihydroxy-5b-cholanoate, 97%, 97%. Offered by: Biosynth, Chemat. Available pack sizes: 5g, 10g, 25g, 50g, 250mg, 100mg.