methyl,piperazinyl,ethoxy,imino,rifamycin,1-piperazin,1-piperazinyl
1-Piperazin
112984-60-86-Fluoro-1-methyl-4-oxo-7-(1-piperazinyl)-4H-[1,3]thiazeto[3,2-a]quinoline-3-carboxylic acid
63422-71-9(D-)-alpha-[[(4-Ethyl-2,3-dioxo-1-piperazinyl) carbonyl]amino]-2-(4-hydroxyphenyl) acetic acid
304463-12-52,3-Butanedione,1-[1-(phenylmethyl)-1H-indol-3-yl]-1-[4-(phenylmethyl)-1-piperazinyl]-,2-(phenylhydrazone)