ChemicalBook >> CAS DataBase List >>9,11-Dehydro Ethynyl Estradiol

9,11-Dehydro Ethynyl Estradiol

CAS No.
1231-96-5
Chemical Name:
9,11-Dehydro Ethynyl Estradiol
Synonyms
Ethinyl Estradiol Related CoMpound B;Ethinylestradiol EP Impurity B;Ethinylestradio Impurity;Ethinylestradiol EP Imp B;9,11-Dehydro Ethynyl Estradiol;9,11-Dehydro Ethylnyl Estradiol;19-Nor-17alpha-pregna-1,3,5(10),9(1;Ethinyl Estradiol USP Related Compound B;9,11-Dehydro Ethylnyl Estradiol (IMpurity B);19-Nor-17α-pregna-1,3,5(10),9(11)-tetraen-20-yne-3,17-diol
CBNumber:
CB22508333
Molecular Formula:
C20H22O2
Molecular Weight:
294.39
MDL Number:
MFCD01310751
MOL File:
1231-96-5.mol
Last updated:2026-08-01 20:02:02

9,11-Dehydro Ethynyl Estradiol Properties

Melting point 181.1-181.9 °C
Boiling point 477.491±45.00 °C(Press: 760.00 Torr)(predicted)
Density 1.242±0.10 g/cm3(Temp: 25 °C; Press: 760 Torr)(predicted)
storage temp. Store at 0-8 °C
solubility Chloroform (Slightly), Methanol (Slightly, Sonicated)
form Solid
pka 10.361±0.60(predicted)
color White to Yellow
FDA UNII 1521KR33D3

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)Health Hazard (GHS08)Environment (GHS09)
GHS07,GHS08,GHS09
Signal word  Danger
Hazard statements  H410-H350-H362
Precautionary statements  P273-P391-P501-P201-P260-P263-P264-P270-P308+P313
HS Code  2937230000

9,11-Dehydro Ethynyl Estradiol price More Price(22)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 1260023 Ethinyl estradiol Related Compound B United States Pharmacopeia (USP) Reference Standard 1231-96-5 20MG $1330 2026-04-30 Buy
TRC TRC-D229610-50MG 9,11-Dehydro Ethynyl Estradiol >95%(HPLC) 1231-96-5 50mg $1197 2026-06-03 Buy
TRC TRC-D229610-25MG 9,11-Dehydro Ethynyl Estradiol >95%(HPLC) 1231-96-5 25mg $669 2026-06-03 Buy
TRC TRC-D229610-100MG 9,11-Dehydro Ethynyl Estradiol >95%(HPLC) 1231-96-5 100mg $1896 2026-06-03 Buy
Usbiological 007790 9,11-Dehydro Ethynyl Estradiol 1231-96-5 10mg $446 2026-06-03 Buy
Product number Packaging Price Buy
1260023 20MG $1330 Buy
TRC-D229610-50MG 50mg $1197 Buy
TRC-D229610-25MG 25mg $669 Buy
TRC-D229610-100MG 100mg $1896 Buy
007790 10mg $446 Buy

9,11-Dehydro Ethynyl Estradiol Chemical Properties, Uses, Production

Chemical Properties

Yellow Solid

Uses

A degradation product of Ethynyl Estradiol (EE); an impurity of Ethynyl Estradiol (E685100).

9,11-Dehydro Ethynyl Estradiol Preparation Products And Raw materials

Raw materials

Preparation Products

9,11-Dehydro Ethynyl Estradiol Suppliers

Global Suppliers ( 63)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Chemsky(shanghai)International Co.,Ltd. 021-50135380 shchemsky@163.com China 280 58
Chemsky(shanghai)International Co.,Ltd. 021-50135380 shchemsky@sina.com China 32273 50
Sinopharm Chemical Reagent Co,Ltd. 86-21-63210123 sj_scrc@sinopharm.com China 9791 79
Clearsynth Labs Limited +91-22-26355700 info@clearsynth.com India 9656 58
Shanghai TaoSu Biochemical Technology Co., Ltd. 021-33632979 info@tsbiochem.com China 8039 58
Quality Control Solutions Ltd. 0755-66853366 13670046396 orders@qcsrm.com China 18188 56
Shandong Boluoda Biological Technology Co., Ltd. 0531-68651502 2310993908@qq.com China 3228 58
Nanjing XiZe Biotechnology CO., Ltd. 025-66023220 15250997978 1511893459@qq.com China 4777 55
BOC Sciences 16314854226 info@bocsci.com United States 9909 65
9,11-Dehydro Ethynyl Estradiol Ethinyl Estradiol Related Compound B (10 mg) (19-Nor-17alpha-pregna-1,3,5(10),9(11)-tetraen-20-yne-3,17-diol) 9,11-Dehydro Ethylnyl Estradiol 9,11-Dehydro Ethylnyl Estradiol (IMpurity B) (17α)-19-Norpregna-1,3,5(10),9(11)-tetraen-20-yne-3,17-diol 19-Nor-17α-pregna-1,3,5(10),9(11)-tetraen-20-yne-3,17-diol Ethinylestradiol Impurity 2(Ethinylestradiol EP Impurity B) 3,17β-dihydroxy-19-norpregna-1,3,5(10),9(11)-tetraene-20-yne Ethinylestradiol EP Imp B 19-Nor-17alpha-pregna-1,3,5(10),9(1 19-Norpregna-1,3,5(10),9(11)-tetraen-20-yne-3,17-diol, (17α)- Ethinylestradiol EP Impurity B/ Ethinyl Estradiol Related Compound B Ethinyl Estradiol Related Compound BQ: What is Ethinyl Estradiol Related Compound B Q: What is the CAS Number of Ethinyl Estradiol Related Compound B 9,11-Dehydro Ethynyl EstradiolQ: What is 9,11-Dehydro Ethynyl Estradiol Q: What is the CAS Number of 9,11-Dehydro Ethynyl Estradiol Q: What is the storage condition of 9,11-Dehydro Ethynyl Estradiol Q: What are the applications of 9,11-Dehydro Ethynyl Estradiol Ethinyl Estradiol Related Compound B (19-Nor-17alpha-pregna-1,3,5(10),9(11)-tetraen-20-yne-3,17-dio (1260023) Ethinyl Estradiol USP Related Compound B Ethinylestradiol EP Impurity B (Ethinyl Estradiol USP Related Compound B (Free Form)) 19-Nor-17alpha-pregna-1,3,5(10),9(11)-tetraen-20-yne-3,17-diol (9,11-Didehydroethinylestradiol) Ethinylestradio Impurity (8s,13s,14s,17r)-17-ethynyl-13-methyl-7,8,12,13,14,15,16,17-octahydro-6h-cyclopenta[a]phenanthrene-3,17-diol Ethinylestradiol EP Impurity B Ethinyl Estradiol Related CoMpound B 1231-96-5 Impurities, Pharmaceuticals, Intermediates & Fine Chemicals, Steroids Impurities Intermediates & Fine Chemicals Pharmaceuticals Steroids