In the title mol-ecule, C(16)H(9)NO(5)S, there is an intra-molecular O-H⋯O hydrogen bond involving the quinolone carbonyl O atom and a carboxyl OH group. In the crystal, inter-molecular O-H⋯O hydrogen bonds between the carbonyl group of the quinolone carboxyl group, and a second carboxyl group on the thia-zeto moiety lead to the formation of chains propagating along [201] and perpendicular to the π-stacks of mol-ecules.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3051750 | PMC |
| http://dx.doi.org/10.1107/S1600536811003333 | DOI Listing |
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