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US08394791B2 Crystalline, enantiomerically pure salt form of a beta-agonist, and the use thereof as a drug 失效
β激动剂的结晶,对映体纯盐形式及其作为药物的用途

Crystalline, enantiomerically pure salt form of a beta-agonist, and the use thereof as a drug
Abstract:
This invention concerns a crystalline, enantiopure hydrochloride salt of N-(5-{2-[3-(4,4-diethyl-2-oxo-4H-benzo[d][1,3]oxazin-1-yl)-1,1-dimethyl-propylamino-1-hydroxy-ethyl}-2-hydroxy-phenyl)-methanesulfonamide, preferably of N-(5-{(R)-2-[3-(4,4-diethyl-2-oxo-4H-benzo[d][1,3]oxazin-1-yl)-1,1-dimethyl-propylamino-1-hydroxy-ethyl}-2-hydroxy-phenyl)-methanesulfonamide and its action as a long acting beta-agonist, alone or in combination with one or multiple other active ingredients for the treatment of respiratory diseases.
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