CAS 1241684-29-6 appears in our catalog under these names: Estrone-2,3,4-13C3 solution, ESTRONE-2,3,4-13C3, 99 ATOM % 13C, 98 &, ESTRONE-2,3,4-13C3, 99 ATOM % 13C, 98, Estrone-13C3, 98.0%. Offered by: Biosynth, Sigma-Aldrich, MedChemExpress. Available pack sizes: 1ml, 10MG, 1MG, 5MG, 1 mg.