A methanol hemisolvate of ciprofloxacin

The title compound [systematic name: 1-cyclo­propyl-6-fluoro-4-oxo-7-(piperazin-4-ium-1-yl)-1,4-dihydro­quinoline-3-carboxyl­ate methanol hemisolvate], C17H18FN3O3·0.5CH4O, is an anti­bacterial fluoro­quinolone. The mol­ecule exists as a zwitterion in the solid state. The methanol mol­ecule is disordered across a twofold rotation axis.

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