(Rac)-Upacicalcet is a racemate of Upacicalcet, which serves as an intravenous calcimimetic agent. Upacicalcet acts by directly targeting calcium-sensing receptors on parathyroid cell membranes, effectively suppressing the release of excessive parathyroid hormone (PTH) and reducing blood PTH levels. This compound holds the potential for researching secondary hyperparathyroidism (SHPT) [1].
GSK3004774 is a nonabsorbable agonist of CaSR (pEC50: 7.3, 6.6, and 6.5 for human, mouse, and rat CaSR). GSK3004774 shows an EC50 of 50 nM for human CaSR.