| 5-hydroxy-6(4-methyl-1-piperazinyl)-4-oxo-4h-pyran-2-carboxylic aci monohyd |
| 5-hydroxy-6-(4-methyl-1-piperazinyl)-4-oxo-4h-pyran-2-carboxylic acid hydroch |
| 6-(n-methylpiperazino)comenic acid hydrochloride |
| 5-hydroxy-6(4-methyl-1-piperazinyl)-4-oxo-4h-pyran-2-carboxylic aci monohydrochloride |
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