CAS 53866-33-4 appears in our catalog under these names: 17beta-Estradiol-2,4-d2, >95% (HPLC), 17beta-Estradiol D2 (2,4-D2), 17beta-Estradiol-2,4-d2, 98 atom % D, min 98% Chemical Purity, 17β–Estradiol–d2, 17β-Estradiol-d2. Offered by: TRC, Dr. Ehrenstorfer, CDN, GLPBio, Biosynth. Available pack sizes: 0,5mg, 1mg, 5mg, 10mg, 0,05g, 0,01g, 2mg, 25mg.