(Benzhydryl-4 piperazinyl-1)-6 purine bismethanesulfonate 26132-67-2 6-(4-Diphenylmethyl-1-piperazinyl)-9H-purine dimethanesulfonate 9H-Purine, 6-(4-benzhydryl-1-piperazinyl)-, bis(methanesulfonate)