Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
May 9, 2017
Patent Application Number
14431351
Date Filed
September 26, 2013
Patent Primary Examiner
Patent abstract
A novel crystalline polymorphic form of ulipristal acetate useful as an agent for preventing and/or treating uterine leiomyoma and as a contraceptive, and a process for producing the crystalline polymorphic form are provided. The novel crystalline polymorphic form of ulipristal acetate is obtained by dissolving an isopropanol-solvated crystal of ulipristal acetate in a mixed solvent containing ethanol and water, and crystallizing an ulipristal acetate from the solution without addition of a seed crystal to the solution.
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