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. 20, 2002
Filed:
Aug. 18, 2000
M. Dean Savage, Rockford, IL (US);
Edward K. Fujimoto, Rockford, IL (US);
Pierce Chemical Company, Rockford, IL (US);
Abstract
A method is disclosed for preparing a fluorogenic phenolic compound with improved optical qualities for use in formulating a substrate solution for assay of peroxidase or peroxide activity. The method involves forming a solution under anoxic conditions which contains the phenolic compound and an aminopolycarboxylic acid or aminopolyphosphonic acid, or salt thereof, metal chelating agent and, while the solution is maintained under anoxic conditions, recovering the compound from the solution in an optically enhanced condition. A composition of matter is also disclosed which includes the fluorogenic phenolic compound in crystal form and a trace quantity of the metal chelating agent.