An FP receptor agonist and prodrug of latanoprost (free acid); induces phosphoinositide turnover in isolated human ciliary muscle and human trabecular meshwork cells, HEK293 cells expressing human ocular FP receptors, mouse NIH3T3 fibroblasts, and rat A7r5 vascular smooth muscle cells (EC50s = 313, 564, 173, 142, and 110 nM, respectively); topical ocular application reduces IOP in cynomolgus monkeys in a model of laser-induced glaucoma at 0.005% twice per day