5'- O- Monobutyryladenosine- 2', 3'- cyclic monophosphate ( 5'-O-MB-2',3'-cAMP ), sodium salt
N6- Phenyladenosine- 3', 5'- cyclic monophosphate ( 6-Phe-cAMP ), sodium salt
N6- Phenyladenosine- 3', 5'- cyclic monophosphorothioate, Sp- isomer ( Sp-6-Phe-cAMPS ), sodium salt