25-Dihydroxyvitamin D3-13C3 (25,26,27-13C3)

 Concentration: 5 µg/mL
Solvent: Ethanol
Unit Size: 1 mL/ampoule
CAS Number: NOT AVAILABLE
Chemical Formula: 13C3C24H44O3
Molecular Weight: 419.61

A stable-labeled internal standard suitable for quantitation of 1,25-Dihydroxyvitamin D3 levels by LC-MS/MS. 1,25-Dihydroxyvitamin D3, also known as calcitriol, is a hormonally active metabolite of vitamin D responsible for regulating calcium. Measurement of 1,25-Dihydroxyvitamin D3 is used to distinguish some cases of primary hyperparathyroidism from hypercalcemia of cancer and for the differential diagnosis of vitamin D-dependent rickets.