Category:
Active Pharmaceutical Ingredients
CAS NO:
477600-73-0
Standard:
EP,
Tofacitinib Impurity 1 (CAS: 207954-78-3) is a synthetic reference standard defined as a degradant of the JAK inhibitor. Its molecular formula is C21H26N6O4S. This impurity typically arises from incomplete cyclization or oxidation during the manufacturing process of the active pharmaceutical ingredient.
Store in a cool, dry place below -20°C under inert atmosphere. Handle with appropriate PPE to avoid skin contact; strictly for laboratory research use only, not for human administration.