(1S)-1-C-(5-Amino-7-(((4-nitrophenyl)methyl)thio)-1H-pyrazolo(4,3-d)pyrimidin-3-yl)-1,4-anhydro-D-ribitol 129970-97-4 5-Amino-7-((4-nitrobenzyl)thio)-3-(beta-D-ribofuranosyl)pyrazolo(4,3-d)pyrimidine 7-Nbtgf D-Ribitol, 1-C-(5-amino-7-(((4-nitrophenyl)methyl)thio)-1H-pyrazolo(4,3-d)pyrimidin-3-yl)-1,4-anhydro-, (1S)- Nitrobenzylthioguanine formycin