Methods for the manufacture of amorphous cefuroxime axetil
Patent 5847118 Issued on December 8, 1998. Estimated Expiration Date: 
July 25, 2017. 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.
July 25, 2017. 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 ReferencesPreparation of a highly pure, substantially amorphous form of cefuroxime axetil Process for preparing cefuroxime axetil Bioavailable crystalline form of cefuroxime axetil Patent #: 5677443 InventorsAssigneeApplicationNo. 900669 filed on 07/25/1997US Classes:540/222Additional hetero ring containingExaminersPrimary: Berch, Mark L.Attorney, Agent or FirmForeign Patent References
International ClassesC07B 063/00C07D 501/34 Foreign Application Priority Data1996-07-26 NZAbstractA process for preparing pure amorphous cefuroxime axetil comprising the steps of dissolving crystalline cefuroxime axetil in a highly polar organic solvent and adding the resulting solution to water, or alternatively, dissolving crystalline cefuroxime axetil in a highly polar solvent and adding small quantities of water to the organic solution and adding the resulting organic-aqueous solution to water.Field of SearchAdditional hetero ring containing |
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