Invention Grant
US07772398B2 Process for making crystalline form I of clopidogrel hydrogen sulphate
有权
制备硫酸氢氯吡格雷的结晶形式I的方法
- Patent Title: Process for making crystalline form I of clopidogrel hydrogen sulphate
- Patent Title (中): 制备硫酸氢氯吡格雷的结晶形式I的方法
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Application No.: US11079881Application Date: 2005-03-11
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Publication No.: US07772398B2Publication Date: 2010-08-10
- Inventor: Eswaraiah Sajja , Raghupathi Reddy Anumula , Bhaskara rao Venkata Uppala
- Applicant: Eswaraiah Sajja , Raghupathi Reddy Anumula , Bhaskara rao Venkata Uppala
- Applicant Address: US NJ Bridgewater IN Hyderabad
- Assignee: Dr. Reddy's Laboratories, Inc.,Dr. Reddy's Laboratories Limited
- Current Assignee: Dr. Reddy's Laboratories, Inc.,Dr. Reddy's Laboratories Limited
- Current Assignee Address: US NJ Bridgewater IN Hyderabad
- Agent Robert A. Franks; Lee C. Banks; Anjum Swaroop
- Main IPC: C07D495/04
- IPC: C07D495/04
Abstract:
A process for preparation of crystalline Form I of clopidogrel hydrogen sulphate, that include separating the crystalline Form I of clopidogrel hydrogen sulphate from a solution of clopidogrel freebase in a solvent, which is 2-propanol or 2-butanol is provided.
Public/Granted literature
- US20060205766A1 Process for making crystalline form I of clopidogrel hydrogen sulphate Public/Granted day:2006-09-14
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