Browsing by Subject "C07C 2103/26 (20130101)"
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Azasteroids Compounds and Derivatives
(U.S. Patent and Trademark Office, 1976-10-19)Azasteroids and certain derivatives each of a five ring system containing at least one aromatic nucleus and at least one nitrogen atom. The ring system is fused to a tetrahydrotetralin system or a tetrahydrophenanthrene ...