Estra-5(10),9(11)-diene-3,17-dione Cyclic 3,17-Bis(1,2-ethanediyl acetal)

In House Impurity

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Catalogue number:	PA 14 0381002
Chemical name:	Estra-5(10),9(11)-diene-3,17-dione Cyclic 3,17-Bis(1,2-ethanediyl acetal)
CAS Number:	57905-07-4
Category:	impurities,metabolites,steroids,pharmaceutical standards,intermediates,Fine Chemicals
Synonyms:	(8'S,13'S,14'S)-13'-Methyl-1',4',6',7',8',12',13',14',15',16'-decahydro-2'H-dispiro[[1,3]dioxolane-2,3'-cyclopenta[a]phenanthrene-17',2''-[1,3]dioxolane];
Molecular form:	C₂₂H₃₀O₄
Appearance:	White Solid
Mol. Weight:	358.48
Storage:	2-8°C Refrigerator
Shipping Conditions:	Ambient
Applications:	Estra-5(10),9(11)-diene-3,17-dione Cyclic 3,17-Bis(1,2-ethanediyl acetal) is an impurity in the synthesis of Dienogest, a derivative of 19-Nortestosterone and an oral contraceptive used in combination with estrogen.