2-Amino-6,9-dihydro-9-(5-O-(hydroxy((hydroxy(phosphonooxy)phosphinyl)oxy)phosphinyl)-beta-D-ribofuranosyl)-7-methyl-6-oxo-1H-purinium, hydroxide, inner salt 26554-26-7 7-Methyl-GTP 7-Methylguanosine 5'-triphosphate 7-methylguanosine triphosphate m(7)GTP