2',3'-IPG, 9-[(3aR,4R,6R,6aR)-2,2-dimethyl-4-methylol-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]-2-amino-3H-purin-6-one, 2′,3′-O-Isopropylideneguanosine, 2',3'-ISOPROPYLIDENE-GUANOSINE, 2-amino-9-[(3aR,4R,6R,6aR)-6-(hydroxymethyl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl]-1,9-dihydro-6H-purin-6-one, 2',3'-O-Isopropylide, 2',3'-O-(1-methylethylidene)-guanosine, 9-[(3aR,4R,6R,6aR)-4-(hydroxymethyl)-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]-2-amino-3H-purin-6-one, 2',3'-O-ISOPROPYLIDENE-GUANOSINE, 2-amino-9-((3aR,4R,6R,6aR)-6-(hydroxymethyl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-1H-purin-6(9H)-one, 9-(2,3-O-Isopropylidene-β-D-ribofuranosyl)guanine, 9-[(3aR,4R,6R,6aR)-4-(hydroxymethyl)-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]-2-azanyl-3H-purin-6-one, 2',3'-O-Isopropylidene-D-guanosine