piperazinyl,ethanone,1-piperazin,1-piperazinyl
1-Piperazin
1054011-01-63-Quinolinecarboxylic acid, 1-cyclopropyl-6-fluoro-1,4-dihydro-7-[4-[2-(Methylthio)benzoyl]-1-piperazinyl]-4-oxo-
1054129-11-13-Quinolinecarboxylic acid, 1-cyclopropyl-7-[4-(2,6-difluorobenzoyl)-1-piperazinyl]-6-fluoro-1,4-dihydro-4-oxo-
63422-71-9(D-)-alpha-[[(4-Ethyl-2,3-dioxo-1-piperazinyl) carbonyl]amino]-2-(4-hydroxyphenyl) acetic acid
112984-60-86-Fluoro-1-methyl-4-oxo-7-(1-piperazinyl)-4H-[1,3]thiazeto[3,2-a]quinoline-3-carboxylic acid