What are the physical and chemical properties of 1-Cyclopropyl-6-fluoro-4-oxo-7-(1-piperazinyl)-1,4-dihydro-3-quinolinecarboxylic acid hydrochloride (CAS: 86483-48-9)?

1-Cyclopropyl-6-fluoro-4-oxo-7-(1-piperazinyl)-1,4-dihydro-3-quinolinecarboxylic acid hydrochloride is a crystalline solid with a molecular weight of approximately 414.93 g/mol. It has a pKa of about 4.2 and is soluble in water. The compound is stable under normal laboratory conditions but reacts with strong bases. It has poor solubility in organic solvents like hexane and ethyl acetate, but is well-soluble in polar solvents such as methanol and ethanol.