13153-25-8 9H-Purin-2-amine, 6-[[(2-chlorophenyl)methyl]thio]-9-.beta.-D-ribofuranosyl- 9H-Purine, 2-amino-6-(o-chlorobenzylthio)-9-.beta.-D-ribofuranosyl- 9H-Purine, 2-amino-6-[(o-chlorobenzyl)thio]-9-.beta.-D-ribofuranosyl- NSC 40666 NSC40666 PC 255