benzoic,chloro,fluoro,piperazinyl,1-piperazin,1-piperazinyl
Piperazinyl
75167-06-51,8-Naphthyridine-3-carboxylic acid, 1,4-dihydro-1-ethyl-6-fluoro-4-ox o-7-(1-piperazinyl)-, monomethanesulfonate
63422-71-9(D-)-alpha-[[(4-Ethyl-2,3-dioxo-1-piperazinyl) carbonyl]amino]-2-(4-hydroxyphenyl) acetic acid