CAS 481-97-0 appears in our catalog under these names: Premarin/ 99.37% (existing batch purity), [(3aS,3bR,9bS,11aS)-11a-methyl-1-oxo-1H,2H,3H,3aH,3bH,4H,5H,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-7-yl]oxidanesulfonic acid, 98%, 98%, Estrone sulfate. Offered by: TargetMol, Chemat, MedChemExpress. Available pack sizes: 1mg, 5mg, 10mg, 25mg, 50mg, 100mg, Get quote.