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 (Cat. No. A 052), and without sulfur modification (A 048). Detailed technical information available.