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Polymorphs of racemic, dextrorotatory, and levorotatory enantioners of 1-cyclopropyl-6-fluoro-8-methoxy-7-(4-amino-3,3-dimethylpiperidin-1-yl)-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid hydrochloride and mesylate salts

US Patent 7538221 · Granted May 26, 2009

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