Tofacitinib Impurity 159
Impurity reference standard · Tofacitinib
- CAS number
- 1640971-51-2
- Molecular formula
- C16H20N6O2
- Molecular weight
- 328.37
- Purity
- 95%+
- Appearance
- Yellow Solid
- Storage
- -20℃±5℃
About Tofacitinib Impurity 159
Tofacitinib Impurity 159 is a specified impurity of Tofacitinib. It is registered under CAS number 1640971-51-2.
The compound is characterised by its molecular formula C16H20N6O2 and a molecular weight of 328.37, with the two-dimensional structure shown above. Because it shares the Tofacitinib scaffold, it is typically used to track process-related and degradation impurities of Tofacitinib during method development, forced degradation and stability studies.
Each pack ships with a certificate of analysis reporting purity of 95%+ together with the supporting analytical data — HNMR, MS and HPLC or GC traces — so the material can be released straight into your own QC workflow. Recommended storage: -20℃±5℃.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Other Tofacitinib impurities
The same parent compound, neighbouring impurity numbers.
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