- COMPOSITIONS AND METHODS FOR REDUCING TACTILE DYSFUNCTION, ANXIETY, AND SOCIAL IMPAIRMENT
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The present invention features novel peripherally-restricted non-benzodiazipene analogs with reduced blood brain barrier permeability and methods of use thereof for reducing tactile dysfunction, social impairment, and anxiety in a subject diagnosed with A
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Page/Page column 67-68
(2019/12/25)
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- CRYSTALLINE POLYMOPHIC FORMS OF ZOPICLONE, PROCESSES FOR THEIR PREPARATION AND THEIR PHARMACEUTICAL COMPOSITIONS
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Disclosed are processes for the preparation of crystalline polymorphic forms of zopiclone and their pharmaceutical compositions for use as a sedative.
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Page/Page column 4
(2010/08/07)
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- A NEW METHOD FOR PREPARATION OF ZOPICLONE AND ITS POLYMORPHS
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A process for the preparation of crystalline Zopiclone comprising i) suspending zopiclone in a mixture of acetonitrile and diisopropyl ether, filtering and drying the resulting solid; ii) dissolving the solid in step i) in N,N-dimethylformamide to get a clear solution; iii) heating and then precipitating solid; iv) filtering and drying the solid to get crystalline zopiclone. Crystalline zopiclone Form C. Crystalline Zopiclone Form D characterized by an X-ray powder diffraction pattern that comprises peaks with 2theta values of at least 14.8, 19.8, 21.3, 27.3 °2θ ± 0.2 °2θ. A process for preparation of crystalline Zopiclone Form D comprising dissolving Zopiclone in N,N-dimethylformamide and filtering; washing clear filtrate with an alkali solution; separating and concentrating the organic layer, adding isopropyl alcohol thereto and concentrating further to get a slurry; filtering the slurry and drying the resultant solid to get crystalline Zopiclone form D. Pharmaceutical composition comprising crystalline forms of Zopiclone.
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Page/Page column 12
(2009/09/04)
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