Invention Grant
US07674898B2 Anhydrous crystal of β-lactam compound and method for preparation thereof
有权
β-内酰胺化合物的无水晶体及其制备方法
- Patent Title: Anhydrous crystal of β-lactam compound and method for preparation thereof
- Patent Title (中): β-内酰胺化合物的无水晶体及其制备方法
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Application No.: US10476221Application Date: 2001-07-23
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Publication No.: US07674898B2Publication Date: 2010-03-09
- Inventor: Akihiro Shimabayashi , Shigetoshi Yaguchi
- Applicant: Akihiro Shimabayashi , Shigetoshi Yaguchi
- Applicant Address: JP Osaka JP Tokyo
- Assignee: Otsuka Chemical Co., Ltd.,Taiho Pharmaceutical Co., Ltd.
- Current Assignee: Otsuka Chemical Co., Ltd.,Taiho Pharmaceutical Co., Ltd.
- Current Assignee Address: JP Osaka JP Tokyo
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2001-134187 20010501
- International Application: PCT/JP01/06321 WO 20010723
- International Announcement: WO02/090363 WO 20021114
- Main IPC: C07D499/87
- IPC: C07D499/87
Abstract:
The present invention provides anhydrous crystals of β-lactam compound represented by the formula: The β-lactam compound of the invention is produced by heating an aqueous solution of a salt of the β-lactam compound and adjusting the pH of the aqueous solution to 3 or lower. The β-lactam compound has excellent storage stability.
Public/Granted literature
- US20040162277A1 Anhydrous crystal of beta-lactam compound and method for preparation thereof Public/Granted day:2004-08-19
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