The molecule is an organophosphate oxoanion obtained by deprotonation of the triphosphate OH groups of 7-methyl-GTP; major species at pH 7.3. It derives from a GTP(3-). It is a conjugate base of a 7-methyl-GTP.
[[[(2R,3S,4R,5R)-5-(2-amino-7-methyl-6-oxo-1H-purin-9-ium-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-oxidophosphoryl] phosphate