Process for forming Form 2 ranitidine hydrochloride
Patent 4672133 Issued on June 9, 1987. Estimated Expiration Date: 
March 18, 2005. 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.
March 18, 2005. 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 ReferencesAmine derivatives and pharmaceutical compositions containing them Aminoalkyl furan derivatives Patent #: 4279819 InventorAssigneeApplicationNo. 06/712610 filed on 03/18/1985US Classes:549/495Chalcogen attached indirectly to the hetero ring by acyclic nonionic bondingExaminersPrimary: Raymond, Richard L.Attorney, Agent or FirmInternational ClassesC07D 307/00 (20060101)C07D 307/52 (20060101) Foreign Application Priority Data1980-10-01 GBAbstractA novel crystal form of ranitidine (N-[2-[[[5-(dimethylamino)methyl]-2-furanyl]methyl]thio]ethyl-N'-methyl-2- nitro-1,1-ethenediamine) hydrochloride, designated Form 2, and having favorable filtration and drying characteristics, is characterized by its infra-red spectrum and/or by its x-ray powder diffraction patterns. |
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