Category:
Active Pharmaceutical Ingredients
CAS NO:
1062580-52-2
Standard:
EP,
Tofacitinib Impurity 19 is a critical synthetic intermediate and degradation product associated with the JAK inhibitor Tofacitinib. It is primarily generated during pharmaceutical synthesis or stress testing. The compound features the molecular formula C20H26N4O3 (CAS No. 159789-48-5), serving as a key reference standard for quality control in API manufacturing.
Strictly store at -20°C in a desiccated environment away from light. Handle only within certified fume hoods using appropriate PPE due to potential mutagenicity. Do not use in human clinical trials without specific regulatory approval for reference standards.