Home8-(4-Chlorophenylthio)guanosine 3',5'-cyclic Monophosphothioate, Rp-Isomer triethylammonium salt8-(4-Chlorophenylthio)guanosine 3',5'-cyclic Monophosphothioate, Rp-Isomer triethylammonium salt ≥98% (by HPLC)