Potent and selective cFMS kinase inhibitor (IC50 = 0.06 μM). Exhibits selectivity for cFMS kinase over 186 other kinases. Inhibits CSF-1-induced growth of rat monocytes in vitro. Also inhibits bone resorption in osteoclast cultures, as well as connective tissue and bone destruction in a rat adjuvant arthritis model. Suppresses M-NFS-60 tumor cell growth in mice. Orally bioavailable. Purity 99%. MW (observed): 366.41