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:
Oct. 26, 2021
Filed:
Dec. 20, 2018
Applicant:
Public Joint Stock Company “scientific Industrial Centre Borshchahivskiy Chemical-pharmaceutical Plant”, Kiev, UA;
Inventors:
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G01N 33/94 (2006.01); G01N 30/02 (2006.01); A61K 31/353 (2006.01); A61K 47/10 (2017.01); A61K 47/12 (2006.01); A61K 47/46 (2006.01);
U.S. Cl.
CPC ...
G01N 33/94 (2013.01); A61K 31/353 (2013.01); A61K 47/10 (2013.01); A61K 47/12 (2013.01); A61K 47/46 (2013.01); G01N 30/02 (2013.01);
Abstract
Provided herein are methods to determine the safety of quercetin compositions regarding contaminants that can result from the degradation of quercetin, such as by storage of solid form quercetin compositions in an air atmosphere. The contaminants include protocatechuic acid, 2,4,6-trihydroxybenzoic acid, and 2-(3,4-dihydroxybenzoyloxy)-4,6-dihydroxybenzoic acid. Provided herein are also methods which reduce degradation of solid form quercetin compositions and reduce the formation of such toxic compounds. The provided methods increase the shelf life and patient safety of quercetin compositions.