C₁₇H₂₆N₇O₇PS; MW 503.5; λ_max 252 nm; ε 13500; purity > 98% HPLC. PDE-stable cyclic GMP analogue suitable for immobilization as affinity ligand (e.g. for purification of phosphodiesterases) or for coupling of various labelling structures including fluorophores. Compare: Corrie et al., Prot. Expr. Purif., 3, 417 - 420 (1992). This structure is also offered as a ligand immobilized to agarose (Rp-2'-AHC-cGMPS-Agarose, Cat. No. A 051), and without sulfur modification (2'-AHC-cGMP, Cat. No. A 048)