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. 16, 2022
Filed:
Apr. 03, 2019
Applicant:
Otsuka Pharmaceutical Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
OTSUKA PHARMACEUTICAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 263/32 (2006.01);
U.S. Cl.
CPC ...
C07D 263/32 (2013.01); C07B 2200/13 (2013.01);
Abstract
Provided is a crystal of a specific oxazole compound that has specific inhibitory activity against PDE4, and that shows excellent stability. Specifically, provided is a crystal of an oxazole compound represented by formula (5) wherein the crystal has peaks at diffraction angles 2θ(°) of 9.6±0.2, 19.1±0.2, and 21.2±0.2 in an X-ray powder diffraction pattern measured using CuKα characteristic X-rays.