methyl,piperazinyl,ethyl,naphthyl,phthalazine,1-piperazin,1-piperazinyl
Piperazinyl
63422-71-9(D-)-alpha-[[(4-Ethyl-2,3-dioxo-1-piperazinyl) carbonyl]amino]-2-(4-hydroxyphenyl) acetic acid
129229-95-4Carbamic acid, (3,4,5-trimethoxyphenyl)-, (1,4-bis(3,4,5-trimethoxyben zoyl)-2-piperazinyl)methyl ester