Methotrexate Impurity 28
Impurity reference standard · Methotrexate
- CAS number
- 5939-37-7
- Molecular formula
- C20H22N8O6
- Molecular weight
- 470.44
- Purity
- 95%+
- Storage
- 2℃-8℃
About Methotrexate Impurity 28
Methotrexate Impurity 28 is a specified impurity of Methotrexate. It is registered under CAS number 5939-37-7.
The compound is characterised by its molecular formula C20H22N8O6 and a molecular weight of 470.44, with the two-dimensional structure shown above. Because it shares the Methotrexate scaffold, it is typically used to track process-related and degradation impurities of Methotrexate 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: 2℃-8℃.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Other Methotrexate impurities
The same parent compound, neighbouring impurity numbers.
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