25-Hydroxyvitamin D3-[26,26,26,27,27,27-d6] Monohydrate (Solution)

25-Hydroxyvitamin D3-[26,26,26,27,27,27-d6] Monohydrate (Solution) is a stable isotope-labeled form of 25-hydroxyvitamin D3, a vitamin D metabolite produced in the liver by hydroxylation of vitamin D3. This solution is commonly used in clinical and research settings for the quantification of 25-hydroxyvitamin D3 in human serum or plasma samples. The chemical formula for 25-Hydroxyvitamin D3-[26,26,26,27,27,27-d6] Monohydrate is C27H44D6O2 and its molecular weight is 421.71 g/mol. It is a clear, colorless solution with a purity of ≥ 98% and is soluble in organic solvents such as ethanol, methanol, and acetone. The stable isotope-labeled form of 25-hydroxyvitamin D3 is used as an internal standard in mass spectrometry-based assays for the quantification of 25-hydroxyvitamin D3 in human samples. This is important because the levels of 25-hydroxyvitamin D3 in blood can vary depending on factors such as sun exposure, diet, and genetics. Using a stable isotope-labeled internal standard allows for more accurate and precise measurements of 25-hydroxyvitamin D3 levels. In addition to its use in clinical and research settings, 25-Hydroxyvitamin D3-[26,26,26,27,27,27-d6] Monohydrate can also be used in the development of new diagnostic tests and the study of vitamin D metabolism and function in the body.