2-Amino-6-oxo-6,9-dihydro-1H-purine 3-oxide, 3',5'-cyclic guanosine monophosphate, guanine-3-N-oxide, 2-Amino-1,7-dihydro-6H-purin-6-one 3-oxide, guanine-N3-oxide, purine-N-oxide, guanosine 3',5'-monophosphate, 2-amino-6H-purin-6-one 3-oxide, Guanin-3-N-oxid, 3',5'-cyclic monophosphate of guanosine, 2-amino-3-oxy-1,7(9)-dihydro-purin-6-one, GUANOSINE 3':5'-CYCLIC MONOPHOSPHATE, guanosine 3',5'-cyclic monophosphate