3'- O- Methylguanosine- 5'- O- triphosphate ( 3'-O-Me-GTP ), sodium salt
2- Methylthioinosine- 5'- O- triphosphate ( 2-MeS-ITP )
Guanine- 2'- deoxy- β- L- ribofuranosyl- 5'- O- triphosphate ( β-L-dGTP )
2'- Deoxy- 2'- fluoroguanosine- 5'- O- (1- thiotriphosphate), Sp- isomer ( Sp-2'-F-dGTP-α-S ), sodium salt
2'- Deoxy- 2'- fluoroguanosine- 5'- O- (1- thiotriphosphate), Rp- isomer ( Rp-2'-F-dGTP-α-S ), sodium salt