butanoic,phenyl,piperazinyl,ethyl,ester,1-piperazin,1-piperazinyl
1-Piperazinyl
63422-71-9(D-)-alpha-[[(4-Ethyl-2,3-dioxo-1-piperazinyl) carbonyl]amino]-2-(4-hydroxyphenyl) acetic acid
90096-03-03,5-Pyridinedicarboxylic acid,4-(3-chlorophenyl)-1,4-dihydro-2,6-dimethyl-, methyl2-(4-phenyl-1-piperazinyl)ethyl ester