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:
Dec. 01, 2015
Filed:
Jul. 24, 2013
Applicant:
Fujiyakuhin Co., Ltd., Saitama-shi, JP;
Inventors:
Yoshiyuki Iwabuchi, Saitama, JP;
Sachiho Miyata, Saitama, JP;
Takahiro Sato, Saitama, JP;
Junichiro Uda, Saitama, JP;
Takamitsu Kandou, Saitama, JP;
Tadashi Inoue, Saitama, JP;
Hiroyuki Nakano, Saitama, JP;
Assignee:
FUJIYAKUHIN CO., LTD., Saitama-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/14 (2006.01);
U.S. Cl.
CPC ...
C07D 401/14 (2013.01);
Abstract
To provide crystal polymorphs of 4-[5-(pyridin-4-yl)-1H-1,2,4-triazol-3-yl]pyridine-2-carbonitrile, which is a useful pharmaceutical, and a production method therefor. Through purification of a corresponding salt, recrystallization, or storage under humidified conditions, three different crystal forms; i.e., crystalline polymorphs of 4-[5-(pyridin-4-yl)-1H-1,2,4-triazol-3-yl]pyridine-2-carbonitrile are produced.