135052-69-6 2-Meimpiig 2H-Purin-2-one, 6-amino-1,3-dihydro-3-(5-O-(hydroxy(2-methyl-1H-imidazol-1-yl)phosphinyl)-beta-D-ribofuranosyl)- 3-Isoisoguanosine 5'-phospho-2-methylimidazole