Prostacyclin (PGI2) analog that binds with high affinity to IP, EP1 and EP3 receptors (Ki values are 11, 11, 56, 284, 619, 1035, 1870 and 6487 nM for IP, EP1, EP3, EP4, FP, DP, EP2 and TP receptors respectively). Inhibits platelet aggregation induced by collagen, thrombin and ADP (IC50 values are 0.24, 0.71 and 1.07 nM respectively).