Title: High purity composition comprising (7a, 17a,)-17-hydroxy-7-methyl 19-nor-17-prege-5-(10)-en-20-yn-3-one
Application Number: 99811734 Application Date: 1999.10.11
Publication Number: 1322210 Publication Date: 2001.11.14
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: A61K31/565;C07J1/00
Applicant(s) Name: Akzo Nobel N.V. Address:
Inventor(s) Name: P.H.G.M. Kirchholtes;G.A.J.M.T. Sas
Attorney & Agent: du jingyang
Abstract:
    The invention pertains to a process for the preparation of a high purity composition of (7 alpha ,17 alpha )- 17-hydroxy- 7-methyl- 19-nor-17-pregn- 5(10)-en-20-yn-3-one. The process provides for a composition with less than 0.5 % of (7 alpha ,17 alpha )- 17-hydroxy- 7-methyl- 19-nor-17-pregn- 4-en-20-yn- 3-one. This composition can be used as a source for the preparation of stable pharmaceutical dosage units.
Time: 8
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