CAS Registry Number

CAS 21343-40-8 — 25-Hydroxy-vitamin D2

25-Hydroxy-vitamin D2 is a key metabolite of vitamin D2 (ergocalciferol), widely used in biochemical research, nutritional studies, and clinical diagnostics to measure vitamin D status. It serves as an intermediate in the metabolic pathway of vitamin D and is essential for assessing vitamin D deficiency, bone health research, and endocrine studies. This chemical has a CAS number of 21343-40-8, with the molecular formula C28H44O2 and a molecular weight of 412.6478. It must be stored at -15 to -20°C and is classified with the signal word "Danger." Molekula supplies 25-Hydroxy-vitamin D2 from research to bulk quantities with full documentation and ISO 9001:2015 traceability.