NOVEL SOLID BODY FORMS OF MESOPROGESTIN 11BETA-4E-(HYDROXYIMINOMETHYL)-PHENYL-17ALPHA-METHOXYMETHYL-17BETA-METHOXY-ESTRA-4,9-DIEN-3-ONE

摘要

Nonsolvated crystalline 11beta -(4-((E)-hydroxyiminomethyl)phenyl)-17alpha -methoxymethyl-17beta -methoxy-4,9-estradien-3-one (I) is new. An independent claim is also included for a process for preparing (I). ACTIVITY : Gynecological. MECHANISM OF ACTION : Progesterone receptor ligand.