Polymorphic form of clopidogrel hydrogen sulphate
Patent 6504030 Issued on January 7, 2003. Estimated Expiration Date: 
June 21, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 21, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDextro-rotatory enantiomer of methyl alpha-5 (4,5,6,7-tetrahydro (3,2-c) thieno pyridyl) (2-chlorophenyl)-acetate and the pharmaceutical compositions containing it 2-thienylglycidic derivative, process for its preparation and its use as synthesis intermediate Patent #: 5132435 InventorsAssigneeApplicationNo. 177092 filed on 06/21/2002US Classes:546/114Ring sulfur in the bicyclo ring systemExaminersPrimary: Aulakh, Charanjit S.Attorney, Agent or FirmForeign Patent References
International ClassesC07D 495/04A61K 031/436.5 Foreign Application Priority Data1998-06-15 FRAbstractNovel orthorombic polymorph of clopidogrel hydrogen sulfate or hydrogen sulfate of methyl (+)-(S)--(2-chlorophenyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-5 -acetate and a process for its preparation |
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