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:
Apr. 14, 2015
Filed:
Mar. 26, 2014
Applicant:
Aska Pharmaceutical Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
ASKA Pharmaceutical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 31/519 (2006.01); C07D 239/90 (2006.01); C07D 495/04 (2006.01);
U.S. Cl.
CPC ...
C07D 495/04 (2013.01); A61K 31/519 (2013.01);
Abstract
The invention provides a crystal of 2-(3,4-dichlorobenzyl)-5-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid (which has the chemical structure shown below) and a mixed crystal comprising such a crystal. The invention also provides methods of producing such crystals, pharmaceutical compositions comprising such crystals, and methods of modulating phosphodiesterase-9 activity and treating disorders such as overactive bladder syndrome by administration of an effective amount of the crystals.