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:
Nov. 16, 1976
Filed:
Dec. 08, 1975
Applicant:
Inventors:
Theodore J Foell, King of Prussia, PA (US);
Richard W Rees, Bryn Mawr, PA (US);
Assignee:
American Home Products Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; A61K / ;
U.S. Cl.
CPC ...
424177 ; 260 / ; 2601 / ;
Abstract
Compounds of the formula: ##EQU1## in which R.sup.4 and R.sup. 5 are methyl or R.sup. 4 is hydrogen and R.sup.5 is alkyl of 1 to 5 carbon atoms or phenethyl, or a non-toxic acid addition salt thereof, are claudogenic-interceptive agents useful in preventing or terminating pregnancy in mammals.