The molecule is a 3',5'-cyclic purine nucleotide that is guanosine 3',5'-cyclic monophosphate(1-) in which the hydrogen at position 8 on the purine fragment has been replaced by a nitro group; major species at pH 7.3. It derives from a 3',5'-cyclic GMP(1-). It is a conjugate base of an 8-nitroguanosine 3',5'-cyclic monophosphate.
9-[(4aR,6R,7R,7aS)-7-hydroxy-2-oxido-2-oxo-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-6-yl]-2-amino-8-nitro-1H-purin-6-one