Adenosine- 2', 3'- cyclic monophosphate ( 2',3'-cAMP ), sodium salt
Cytidine- 2', 3'- cyclic monophosphate ( 2',3'-cCMP ), sodium salt
Inosine- 2', 3'- cyclic monophosphate ( 2',3'-cIMP ), sodium salt
2'- O- (6- Aminohexylcarbamoyl)uridine- 3', 5'- cyclic monophosphate ( 2'-AHC-cUMP ), sodium salt