6-[4-(3,4-Dimethoxy-benzoyl)-piperazin-1-yl]-1-methyl-1H-quinazoline-2,4-dione
methyl 5-(4-benzyl-1-piperazinyl)-2-trifluoroacetylaminobenzoate
6-(4-Benzyl-piperazin-1-yl)-1-methyl-1H-quinazoline-2,4-dione
methyl 5-(4-benzyl-1-piperazinyl)-2-(N-methylamino)benzoate
methyl 2-amino-5-(4-benzyl-1-piperazinyl)benzoate dihydrochloride