N2- (6- Aminohexyl)guanosine- 3', 5'- cyclic monophosphate ( 2-AH-cGMP )
N2- Methylguanosine- 3', 5'- cyclic monophosphate ( 2-Me-cGMP ), sodium salt
8- (2- (6- [Biotinyl]aminohexanoyl)aminoethylthio)guanosine- 3', 5'- cyclic monophosphate ( 8-Biotin-11-cGMP / 8-[Biotin]-AET-cGMP ), sodium salt