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:
Mar. 11, 2008
Filed:
Oct. 20, 2002
Souichirou Kawazoe, Takahagi, JP;
Kenichirou Sakamoto, Takahagi, JP;
Yuji Awamura, Tsukuba, JP;
Tatsuya Maruyama, Tsukuba, JP;
Takayuki Suzuki, Tsukuba, JP;
Kenichi Onda, Tsukuba, JP;
Toshiyuki Takasu, Tsukuba, JP;
Souichirou Kawazoe, Takahagi, JP;
Kenichirou Sakamoto, Takahagi, JP;
Yuji Awamura, Tsukuba, JP;
Tatsuya Maruyama, Tsukuba, JP;
Takayuki Suzuki, Tsukuba, JP;
Kenichi Onda, Tsukuba, JP;
Toshiyuki Takasu, Tsukuba, JP;
Astellas Pharma Inc., Tokyo, JP;
Abstract
To provide novel crystals useful as an ingredient for the production of a diabetes remedy. The invention is concerned with α-form crystal and β-form crystal of (R)-2-(2-aminothiazol-4-yl)-4'-[2-[(2-hydroxy-2-phenyleth-yl)amino]ethyl]acetanilide. The α-form crystal does not exhibit hygroscopicity and has stability such that it can be used as a medicine, and is useful for mass synthesis in the industrial production. The β-form crystal does not relatively exhibit hygroscopicity and is also useful as a production intermediate of the α-form crystal.