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:
Feb. 21, 2017
Filed:
Apr. 03, 2014
Applicant:
Eisai R&d Management Co., Ltd., Bunkyo-ku, Tokyo, JP;
Inventor:
Shunsuke Ozaki, Kamisu, JP;
Assignee:
Eisai R&D Management Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 471/04 (2006.01); A61K 31/4745 (2006.01); C07C 57/145 (2006.01); C07C 309/29 (2006.01);
U.S. Cl.
CPC ...
C07D 471/04 (2013.01); A61K 31/4745 (2013.01); C07C 57/145 (2013.01); C07C 309/29 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present invention provides a salt of (S)-7-(2-methoxy-3,5-dimethylpyridin-4-yl)-1-(tetrahydrofuran-3-yl)-1H-pyrazolo[4,3-c]quinolin-4(5H)-one and an acid selected from the group consisting of hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, malonic acid, maleic acid, tartaric acid, methanesulfonic acid, benzenesulfonic acid and toluenesulfonic acid; or a crystal thereof with a potential to be used as drug substance in pharmaceuticals.