Formulation: A crystalline solid
Formal Name: N-acetyl-D-cysteinyl-D-alanyl-D-arginyl-D-arginyl-D-arginyl-D-alanyl-D-argininamide, disulfide with L-cysteine, hydrochloride
Purity: ≥95%
Formula Markup: C38H73N21O10S2 • XHCl
Formula Weight: 1048,3
Shelf life (days): 1460
CAS Number: 1334237-71-6
Notes: Etelcalcetide is a peptide agonist of the calcium-sensing receptor (CaSR).{47345} It is selective for CaSR over a panel of 33 receptors and ion channels, as well as the norepinephrine transporter at 10 µM. Etelcalcetide increases intracellular calcium levels in HEK293T cells expressing the human CaSR receptor with an EC50 value of 0.53 µM. It also inhibits parathyroid secretion from primary rat parathyroid cells (EC50 = 0.36 µM in the presence of calcium). Etelcalcetide (0.3, 1, and 3 mg/kg) decreases parathyroid hormone and calcium levels in plasma and serum, respectively, in a model of chronic renal insufficiency with secondary hyperthyroidism in nephrectomized rats fed a high-phosphorus diet. Formulations containing etelcalcetide have been used in the treatment of secondary hyperparathyroidism in adult patients with chronic kidney disease undergoing hemodialysis.
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