8- (2- (6-[Biotinyl]aminohexanoyl)aminoethylthio)- cyclic diguanosine monophosphate ( 8-Biotin-11-c-diGMP / 8-[Biotin]-AET-c-diGMP ), sodium salt
2'- O- (6- (6- [Biotinyl]aminohexanoyl)aminohexylcarbamoyl)- cyclic diguanosine monophosphate ( 2'-Biotin-16-c-diGMP / 2'-[Biotin]-AHC-c-diGMP ), sodium salt