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. 08, 1986
Filed:
May. 17, 1984
Applicant:
Inventor:
Rudolf Franzmair, Linz, AT;
Assignee:
Chemie Linz Aktiengesellschaft, Linz, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548315 ; 548320 ;
Abstract
Compounds of the formula ##STR1## in which R.sub.1 and R.sub.2 are hydrogen, halogen, methyl or methoxy and R.sub.3, R.sub.4 and R.sub.5 are hydrogen, methyl or an electronegative substituent from the group consisting of halogen, C.sub.1 to C.sub.4 -alkoxy, cyano, nitro or methylsulfonyl, with the proviso that one of the radicals R.sub.3 to R.sub.5 is always the electronegative substituent of said group, and pharmaceutically acceptable acid addition salts thereof; the compounds as well as the salts are useful as analgesics.