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:
Aug. 17, 1982
Filed:
Dec. 28, 1979
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
New heterocyclylcarboxylic acid derivatives which are acylated in the nucleus, especially benz-acyl-benzimidazole-2-carboxylic acid derivatives of the formula ##STR1## in which R is a free, esterified or amidated carboxyl group or a free, etherified or esterified hydroxymethyl group, R.sub.1 is an aliphatic, cycloaliphatic, aromatic, araliphatic, heterocyclic or heterocyclic-aliphatic radical, R.sub.2 is hydrogen or an aliphatic radical and Ph is a 1,2-phenylene group containing the radical R.sub.1 --C(.dbd.O)--, with the proviso that R.sub.1 contains at least 2 carbon atoms if Ph is otherwise unsubstituted, R.sub.2 is ethyl and R is acetoxymethyl, and salts of such compounds having salt-forming properties, are useful as anti-allergic agents.