36892-43-0 9-Isobutylguaneran 9H-Purin-2-amine, 6-[(1-methyl-4-nitro-1H-imidazol-5-yl)thio]-9-(2-methylpropyl)- 9H-Purine, 2-amino-9-isobutyl-6-(1-methyl-4-nitroimidazol-5-ylthio)- NSC44585 PC 298