136112-71-5 8,9-Bis(4-nitrophenyl)-9H-purin-6-amine 8,9-Bis(p-nitrophenyl)adenine 8,N(sup 9)-Bis(p-nitrophenyl)adenine 9H-Purin-6-amine, 8,9-bis(4-nitrophenyl)- CCRIS 5376