Category:
Preclinical Research Services
CAS NO:
22350-41-0
Standard:
USP, EP,
Cholecalciferol EP Impurity A (CAS 1257-46-9) is a critical reference standard defined in the European Pharmacopoeia for Cholecalciferol. It represents 25-hydroxycholecalciferol, a primary metabolite formed during synthesis or storage degradation. The molecular formula is C27H44O2. This impurity serves as an essential analytical tool for validating potency and purity profiles of Vitamin D3 raw materials.
Store strictly at -20°C in dark, inert atmospheres to prevent oxidation. Handle only with appropriate PPE in certified fume hoods due to potential bioactivity. Do not use as a therapeutic agent; intended solely for laboratory analysis.