The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 1997
Filed:
Mar. 18, 1996
Applicant:
Inventors:
Matthias Kottenhahn, Freigericht, DE;
Karlheinz Drauz, Freigericht, DE;
Assignee:
Degussa Aktiengesellschaft, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548533 ; 548534 ; 548535 ;
Abstract
A process for purifying 1-[N.sup.2 -((S)-ethoxycarbonyl)-3-phenylpropyl)-N.sup.6 -trifluoroacetyl]-1-lysyl-1-proline by extraction and crystallization. The process includes a two step extraction in a two phase aqueous/organic solvent system and crystallization from organic solvent.