Estradiol

Synonyms:  1,3,5-Estratriene-3,17beta-diol; 17beta-Estradiol; 3,17beta-Dihydroxy-1,3,5(10)-estratriene; Dihydrofolliculin
Standard USP31/EP6.0
Formula C18H24O2
Mol. Weight 272.38
CAS 50-28-2
Packing 5kg/tin, 25kg/drum
Origin China

USP31
Appearance         White or almost white crystalline powder
Identification     IR, UV
Melting range         173~179oC
Water                 Max 3.5%
Specific rotation +76o~+83o
Individual impurity  Max 0.50%
Total impurities Max 1.0%
Assay                 97%~103%
 
Application
Estradiol (E2 or 17-estradiol, also oestradiol) is a sex hormone. Estradiol is abbreviated E2 as it has 2 hydroxyl groups in its molecular structure. Estrone has 1 (E1) and estriol has 3 (E3). Estradiol is about 10 times as potent as estrone and about 80 times as potent as estriol in its estrogenic effect. Except during the early follicular phase of the menstrual cycle, its serum levels are somewhat higher than that of estrone during the reproductive years of the human female. Thus it is the predominant estrogen during reproductive years both in terms of absolute serum levels as well as in terms of estrogenic activity.
Packing:
5kg/tin, 25kg/drum

Delivery Time:
15days

Relative products: Relative products:
Estradiol benzoate, CAS: 50-50-0
Depofemin, CAS: 313-06-4
Estradiol valerate, CAS: 979-32-8
Estramustine, CAS: 2998-57-4
Estradiol enanthate, CAS: 4956-37-0
Epiestrol: CAS: 57-91-0
2-Methoxyestradiol, CAS: 362-07-2
3-Methylether-estradiol, CAS: 94535-16-7