title: 1-Ethyl-6-fluoro-7-(4-methyl-piperazin-4-ium-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate hexa-hydrate.
abstract: In the title compound, C(17)H(20)FN(3)O(3)·6H(2)O, the pefloxacin (pef) neutral zwitterion is accompanied by six water mol-ecules of hydration. An extensive network of O-H⋯O and N-H⋯O hydrogen bonds help to establish the crystal packing.
authors.forename: Zhe
authors.initials: Z
authors.lastname: An
authors.forename: Qing-Cheng
authors.initials: QC
authors.lastname: Liang