Salts of 1-cyclopropyl-8-methyl-7- [5-methyl-6- (methylamino) -3-pyridinyl] -4-oxo-1,4-dihydro-3-quinolinecarboxylic acid

pharmaceutical salt 1-cyclopropyl-8-methyl-7- [5-methyl-6- (methylamino) -3-pyridinyl] -4-oxo-1,4-dihydro-3-quinolinecarboxylic acid, which is the hydrochloride hydrate having a solubility of> = 0.050 mg / mL of water.