21221-29-4 Usage
Description
Ethynylestradiol 17-Acetate, also known as Ethynyl Estradiol 17-Acetate, is a synthetic estrogen compound with the chemical formula C20H22O3 and a molecular weight of 306.39 g/mol. It is a white solid and is used in organic synthesis.
Uses
Used in Pharmaceutical Industry:
Ethynylestradiol 17-Acetate is used as a pharmaceutical ingredient for the development of oral contraceptives and hormone replacement therapies. It is known for its potent estrogenic effects and is often combined with progestogens to regulate menstrual cycles and prevent pregnancy.
Used in Organic Synthesis:
Ethynylestradiol 17-Acetate is used as a key intermediate in the synthesis of various pharmaceutical compounds, including other estrogenic substances and related drugs. Its unique chemical structure allows for the formation of new compounds with potential therapeutic applications.
Check Digit Verification of cas no
The CAS Registry Mumber 21221-29-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,2 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21221-29:
(7*2)+(6*1)+(5*2)+(4*2)+(3*1)+(2*2)+(1*9)=54
54 % 10 = 4
So 21221-29-4 is a valid CAS Registry Number.
InChI:InChI=1/C22H26O3/c1-4-22(25-14(2)23)12-10-20-19-7-5-15-13-16(24)6-8-17(15)18(19)9-11-21(20,22)3/h1,6,8,13,18-20,24H,5,7,9-12H2,2-3H3/t18-,19-,20+,21+,22+/m1/s1
21221-29-4Relevant articles and documents
Synthesis of β-glucuronides of estradiol, ethynylestradiol and estrone
Werschkun, Barbara,Gorziza, Karin,Thiem, Joachim
, p. 629 - 637 (2007/10/03)
Improved syntheses for the 3-β-D-glucuronides of the steroidal sex hormones 17β-estradiol, 17α-ethynylestradiol and estrone are reported employing boron trifluoride diethyl etherate catalysis with tetraacetylated glucuronic acid or the corresponding imidate.
17β-Ethynyl-3,17α-estradiol and derivatives thereof
-
, (2008/06/13)
17β-ethynyl-3,17α-estradiol and derivatives thereof are prepared by epimerization of 17-acyl esters of 17α-ethynyl-3,17β-estradiol 3-ethers. 17β-ethynyl-3,17αestradiol and its derivatives are active as post-coital antifertility agents and inhibit the growth of or reduce the size of the prostate gland and the seminal vesicle.
