1-(6-Amino-9H-purin-9-yl)-1-deoxy-2,3-O-(1-methylethylidene)-beta-D-ribofuranurononitrile 54918-23-9 beta-D-Ribofuranurononitrile, 1-(6-amino-9H-purin-9-yl)-1-deoxy-2,3-O-(1-methylethylidene)-