3384-61-0 9H-Purin-2-amine, 6-[(1-methyl-4-nitro-1H-imidazol-5-yl)thio]-9-.beta.-D-ribofuranosyl- 9H-Purine, 2-amino-6-(1-methyl-4-nitroimidazol-5-ylthio)-9-.beta.-D-ribofuranosyl- 9H-Purine, 2-amino-6-[(1-methyl-4-nitroimidazol-5-yl)thio]-9-.beta.-D-ribofuranosyl- NSC40665 PC 254