5'-Phosphoguanylyl-(3',5')-guanosine
5'-Phosphoguanylyl-(3',5')-guanosine (pGpG) is an intermediate molecule produced by the pathway for enzymatic cyclic diguanylate (c-di-GMP) degradation. 5'-Phosphoguanylyl-(3',5')-guanosine can be used to detect the metabolism of nucleic acids.