N'-(2-cyano-9-methyl-9H-purin-6-yI)-N'-cyclopentyl-3-(4-methyl-1-piperazinyl)benzohydrazide
trifluoroacetic acid
3-(4-methyl-1-piperazinyl) benzoyl chloride
6-(1-cyclopentylhydrazino)-9-methyl-9H-purine-2-carbonitrile
methyl 3-(4-methylpiperazin-1-yl)benzoate