Formulation: A solution in water
Formal Name: guanosine, 5′→P′-ester with [P′(S)]-thiodiphosphoric acid ((HO)2P(O)OP(O)(OH)(SH)), trisodium salt
Purity: ≥95%
Formula Markup: C10H12N5O10P2S • 3Na
Formula Weight: 525,2
Shelf life (days): 730
Notes: Sp-Guanosine-5'-O-(1-thiodiphosphate) (Sp-GDP-α-S) is an isomer of the sulfur-containing nucleotide derivative GDP-α-S.{72000} It has been used to evaluate the stereospecificity of several GDP- and GTP-dependent enzymes, including guanylate cyclase and GTPases such as transducin.{72001,72002}