CAS 221093-45-4 appears in our catalog under these names: 17beta-Estradiol-2,4,16,16,17-d5, >95% (HPLC), 17beta-Estradiol-2,4,16,16,17-d5, 98 atom % D, min 98% Chemical Purity, 17β-Estradiol-2,4,16,16,17-d5, 17β-Estradiol-d5 solution, Estradiol-d5, 99.73%. Offered by: TRC, CDN, TargetMol, Biosynth, MedChemExpress. Available pack sizes: 0,5mg, 1mg, 5mg, 0,05g, 0,01g, 10mg, 5ml, 10ml.