(R)-1-C-(7-Amino-5-chloro-1H-pyrazolo(4,3-d)pyridmidin-3-yl)-1,4-anhydro-2-deoxy-D-erythro-Pentitol 103090-53-5 2'-Deoxy-5'-chloroformycin 5'-Chloro-2'-deoxyformycin A D-erythro-Pentitol, 1-C-(7-amino-5-chloro-1H-pyrazolo(4,3-d)pyridmidin-3-yl)-1,4-anhydro-2-deoxy-, (R)-