ChemicalBook--->CAS DataBase List--->297-76-7

297-76-7

297-76-7 Structure

297-76-7 Structure
IdentificationMore
[Name]

Ethynodiol diacetate
[CAS]

297-76-7
[Synonyms]

17alpha-ethynyl-4-estrene-3b,17b-diol-3,17-diacetate
19-nor-17a-pregn-4-en-20-yne-3b,17-diol diacetate
3BETA,17BETA-DIACETOXY-17ALPHA-ETHYNYL-4-ESTRENE
4-ESTREN-17-ALPHA-ETHYNYL-3-BETA, 17-BETA-DIOL DIACETATE
ETHYNODIOL DIACETATE
(3-beta,17-alpha)-19-Norpregn-4-en-20-yne-3,17-diol diacetate
(3-beta,17-alpha)-19-norpregn-4-en-20-yne-3,17-dioldiacetate
17-(Acetyloxy)-17-ethynylestr-4-en-3-yl acetate
17-alpha-Ethynyl-19-norandrost-4-ene-3-beta,17-beta-diol diacetate
17-alpha-ethynyl-19-norandrost-4-ene-3-beta,17-beta-dioldiacetate
17-alpha-Ethynyl-3,17-dihydroxy-4-estrene diacetate
17-alpha-ethynyl-3,17-dihydroxy-4-estrenediacetate
17-alpha-Ethynyl-4-estrene-3-beta,17-beta-diol diacetate
17-alpha-ethynyl-4-estrene-3-beta,17-beta-dioldiacetate
17-alpha-Ethynyl-4-estrene-3-beta,17-diol diacetate
17-alpha-ethynyl-4-estrene-3-beta,17-dioldiacetate
17-alpha-Ethynylestr-4-ene-3-beta,17-beta-diol acetate
17-alpha-ethynylestr-4-ene-3-beta,17-beta-diolacetate
19-Nor-17alpha-pregn-4-en-20-yn-3beta,17-diol diacetate
19-Nor-17-alpha-pregn-4-en-20-yne-3-beta,17-diol diacetate
[EINECS(EC#)]

206-044-9
[Molecular Formula]

C6H6O4
[MDL Number]

MFCD00083326
[Molecular Weight]

142.11
[MOL File]

297-76-7.mol
Chemical PropertiesBack Directory
[Melting point ]

~126-127°
[alpha ]

D -72.5° (chloroform)
[Boiling point ]

431.17°C (rough estimate)
[density ]

1.0474 (rough estimate)
[refractive index ]

1.4860 (estimate)
[storage temp. ]

2-8°C
[solubility ]

Chloroform (Slightly), DMSO (Slightly)
[form ]

Solid
[color ]

White
[Water Solubility ]

1.4mg/L(25 ºC)
[CAS DataBase Reference]

297-76-7(CAS DataBase Reference)
[NIST Chemistry Reference]

Ethynodiol diacetate(297-76-7)
[EPA Substance Registry System]

297-76-7(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R40:Limited evidence of a carcinogenic effect.
[Safety Statements ]

S22:Do not breathe dust .
S36:Wear suitable protective clothing .
[WGK Germany ]

3
[RTECS ]

RC8963000
[HS Code ]

2937230000
[Safety Profile]

Suspected carcinogen. Human reproductive effects by ingestion: menstrual cycle changes. Experimental reproductive effects. Mutation data reported. A steroid. When heated to decomposition it emits acrid smoke and irritating fumes.
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

19-Nor-17a-pregn-4-en-20-yne-3b,17-diol diacetate(297-76-7).msds
Hazard InformationBack Directory
[Description]

Ethynodiol diacetate is a synthetic progestogen. It prevents the development of osteoporosis in ovariectomized rats when administered at a dose of 9 μg/animal per day. Ethynodiol diacetate inhibits copulatory ovulation in rabbits. Formulations containing ethynodiol diacetate have been used as oral contraceptives.
[Originator]

Lutometrodiol,Searle,France,1965
[Uses]

anticonvulsant
[Uses]

Ethynodiol Diacetate is used as a hormonal contraceptive, birth control.
[Definition]

ChEBI: Ethynodiol diacetate is a steroid ester and a terminal acetylenic compound. It has a role as an estrogen receptor modulator, a contraceptive drug and a synthetic oral contraceptive. It is functionally related to an ethynodiol.
[Manufacturing Process]

A mixture of 30 parts of 17α-ethynyl-19-norandrost-4-ene-3β,17β-diol, 360 parts of dry pyridine, and 111 parts of acetic anhydride, under nitrogen, is stirred and heated at the reflux temperature for about 5 hours. This reaction mixture is cooled, then poured into approximately 3,500 parts of cold water and the resulting aqueous mixture is stirred at room temperature for about 0.5 hour. The precipitate which forms is collected by filtration, then is washed on the filter with water and dried in air. This solid material is extracted into ether, and the ether solution is washed successively with 10% aqueous
[Therapeutic Function]

Progestin; Oral contraceptive ingredient
[General Description]

Ethynodiol diacetate, 19-norpregn-4-en-20-yne-3β,17α-diol diacetate, is a prodrug ofnorethindrone. A combination of hydrolysis of both estersand oxidation of the C3 alcohol to the ketone is necessary toprovide the fully active progestin.
[References]

[1] J M AITKEN  J B A  E Armstrong. Osteoporosis after oophorectomy in the mature female rat and the effect of oestrogen and-or progestogen replacement therapy in its prevention.[J]. Journal of Endocrinology, 1972, 55 1: 79-87. DOI: 10.1677/joe.0.0550079
[2] M SUZUKI  K T  M Hiroi. Effects of ethynodiol diacetate (SC 11800) on the pregnancy and mating behavior in female rats.[J]. Tohoku Journal of Experimental Medicine, 1972, 107 4: 317-322. DOI: 10.1620/tjem.107.317
Spectrum DetailBack Directory
[Spectrum Detail]

Ethynodiol diacetate(297-76-7)1HNMR
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

297-76-7(sigmaaldrich)
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