17α-Dihydroequilin

17α-Dihydroequilin
Clinical data
Other names	α-Dihydroequilin; 7-Dehydro-17α-estradiol; Estra-1,3,5(10),7-tetraen-3,17α-diol
Routes of; administration	By mouth
Drug class	Estrogen
ATC code	G03CA57 (WHO) ;
Identifiers
	IUPAC name (9S,13S,14S,17R)-13-methyl-6,9,11,12,14,15,16,17-octahydrocyclopenta[a]phenanthrene-3,17-diol;
CAS Number	651-55-8;
PubChem CID	9547222;
ChemSpider	7826162;
UNII	48P73794OJ;
CompTox Dashboard (EPA)	DTXSID70873788 ;
ECHA InfoCard	100.010.440
Chemical and physical data
Formula	C18H22O2
Molar mass	270.372 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES CC12CCC3C(=CCC4=C3C=CC(=C4)O)C1CCC2O;
	InChI InChI=1S/C18H22O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h3-5,10,14,16-17,19-20H,2,6-9H2,1H3/t14-,16+,17-,18+/m1/s1; Key:NLLMJANWPUQQTA-SPUZQDLCSA-N;

17α-Dihydroequilin, or α-dihydroequilin, also known as 7-dehydro-17α-estradiol, as well as estra-1,3,5(10),7-tetraene-3,17α-diol, is a naturally occurring steroidal estrogen found in horses which is closely related to equilin, equilenin, and 17α-estradiol. The compound, as the 3-sulfate ester sodium salt, is present in conjugated estrogens (Premarin), a pharmaceutical extract of the urine of pregnant mares, and is the third highest quantity constituent in the formulation (13.8%). The compound has been studied clinically.

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