Category:
Active Pharmaceutical Ingredients
CAS NO:
N/A
Standard:
EP,
Tofacitinib Impurity 21 is a synthetic byproduct formed during the manufacturing of the JAK inhibitor Tofacitinib. It serves as a critical reference standard for quality control in pharmaceutical synthesis. The compound features the molecular formula C15H18N6O4 and carries CAS No. 197950-38-6.
Store under inert atmosphere at temperatures below -20°C to prevent hydrolysis. Handle with appropriate PPE as a potential genotoxicant; avoid direct skin contact and inhalation of dust particles during weighing procedures.