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:
Sep. 10, 1991
Filed:
Mar. 02, 1989
Heinz Gries, Berlin, DE;
Heinrich Pfeiffer, Berlin, DE;
Ulrich Speck, Berlin, DE;
Wolfgang Mutzel, Berlin, DE;
Schering Aktiengesellschaft, Berlin and Bergkamen, DE;
Abstract
Nonionic compounds of the formula ##STR1## wherein X is --CONR.sub.1 R.sub.2, --COOR.sub.3, --CH.sub.2 NHR.sub.7 or --CH.sub.2 OH; Y is --1R.sub.1 R.sub.2 or --OR.sub.3 ; and Z is --NR.sub.1 R.sub.2, --NHR.sub.7 or --OR.sub.3 ; and wherein R.sub.1 R.sub.2 and R.sub.3 in X, Y or Z, and R.sub.7 in X and Z, are identical or different, R.sub.1 and R.sub.2, and each is hydrogen, C.sub.1-6 -alkyl or C.sub.2-8 - alkyl substituted by 1-5 OH groups and/or by a C.sub.1-3 -alkoxy group; R.sub.3 is C.sub.1-4 -alkyl or C.sub.2-4 -alkyl substituted by 1-2 OH groups and/or by a C.sub.1-3 -alkoxy group; and R.sub.7 is an acyl group of a C.sub.2-5 OH group and/or by a C.sub.1-3 -alkoxy group are highly advantageous X-ray contrast agents.