antibacterial drugs for fish.

摘要

Antibacterial medicaments for fish contain 1-cyclopropyl-7-(1-piperazinyl)- 6-fluoro, 4-dihydro-4-4oxo-3- quinolinecarboxylic acid cpds. of formula (I) or their salts or hydrates; R1 = H, lower alkyl or lower hydroxyalkyl; R2 = H or lower alkyl. (I) are described in JA 71683/82 and 74667/83.