Guanosine- 3', 5'- cyclic monophosphate- [8- thiomethylamido- (PEG pd 2000)- amidomethylthio- 8]- guanosine- 3', 5'- cyclic monophosphate ( cGMP-8-TMAmd-(PEG pd 2000)-AmdMT-8-cGMP ), sodium salt
β- Phenyl- 1, N²- ethenoguanosine- 3', 5'-cyclic monophosphate- [8- thiomethylamido- (octaethoxy)- ethylamidomethylthio- 8]- β- phenyl- 1, N²- ethenoguanosine- 3', 5'-cyclic monophosphate ( PET-cGMP-8-TMAmd-(EO)₈-EAmdMT-8-cGMP-PET ), sodium salt
β- Phenyl- 1, N²-ethenoguanosine- 3', 5'-cyclic monophosphate- [8- thiomethylamido- (PEG pd 2000)- amidomethylthio- 8]- β- phenyl- 1, N²-ethenoguanosine- 3', 5'-cyclic monophosphate ( PET-cGMP-8-TMAmd-(PEG pd 2000)-AmdMT-8-cGMP-PET ), sodium salt