CH5447240 is a potent Human Parathyroid Hormone Receptor 1 (hPTHR1) Agonist for Treatment of Hypoparathyroidism. CH5447240 exhibited a potent in vitro hPTHR1 agonist effect with EC20 of 3.0 nM and EC50 of 12 nM and showed excellent physicochemical properties, such as high solubility in fasted state simulated intestinal fluid and good metabolic stability in human liver microsomes. mportantly, CH5447240 showed 55% oral bioavailability, and a significantly elevated serum calcium level in hypocalcemic model rats.
