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:
Jun. 12, 1990
Filed:
Mar. 31, 1987
Spyros Theodoropulos, Yorktown Heights, NY (US);
Other;
Abstract
Novel carbamates of 2-ureado-6-hydroxy-pyridines have the structural formula ##STR1## wherein n is 0 to 20; R.sub.1 is hydrogen, alkyl which may be substituted, aryl which may be substituted; R.sub.2 is hydrogen, halogen, carboxylic, SO.sub.3 H, NO.sub.2, alkyl or aryl; R.sub.3 and R.sub.4 have the same meaning as R.sub.2 ; Z is N.dbd.C.dbd.O, N.dbd.C.dbd.S, carboxylic, primary or secondary amine and when n.dbd.O, Z may be ##STR2## wherein Q is hydroxyl, amino, carboxylic, sulfhydryl, isocyanato or isothiocyanato. The carbamates of 2-ureado-6-hydroxypyridines react with compounds of interest to form derivatives which will chelate metal ions such as radionuclides or lanthanides, resulting in the radioisotopic or fluorescent labeling of the compounds.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile