CAS 63296-46-8 appears in our catalog under these names: Ursodeoxycholic Acid-24-13C, >95% (HPLC), Ursodeoxycholic Acid-24-13C, 99 atom % 13C, min 98% Chemical Purity, Ursodeoxycholic acid-13C. Offered by: TRC, CDN, MedChemExpress. Available pack sizes: 0,5mg, 1mg, 5mg, 0,05g, 0,01g, 1 mg, 500 μg, 5 mg.