theophylline,benzyl,piperazinyl,propyl,dihydrochloride,1-piperazin,1-piperazinyl
1-Piperazin
63422-71-9(D-)-alpha-[[(4-Ethyl-2,3-dioxo-1-piperazinyl) carbonyl]amino]-2-(4-hydroxyphenyl) acetic acid
19977-07-21-Piperazineethanol, 4-(m-chlorobenzyl)-alpha-(1,3-dimethyl-7-xanthiny lmethyl)-, benzoate (ester)