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. 12, 1980
Filed:
Mar. 23, 1979
John W Cole, Deerfield, IL (US);
Abbott Laboratories, North Chicago, IL (US);
Abstract
The present invention comprises compounds of the formula ##STR1## and the biologically acceptable acid addition salts thereof, wherein R.sub.1 represents an alkylene having 2-4 carbon atoms; R.sub.2 is selected from the group consisting of amino and quanyl; R.sub.3 is selected from the group consisting of nitrophenyl, methylnitrophenyl, dinitrophenyl, naphthyl and nitronaphthyl; X represents halo or lower alkyl having 1-4 carbon atoms; and n is 3 or 4. The compounds of the present invention are analytical reagents useful for measuring proteolytic enzymes such as thrombin and trypsin. The enzymatic hydrolysis of the invention compounds provides a chromogenic amine by which the proteolytic enzyme concentration can be determined spectrophotometrically.