Tretinoin EP Impurity F (4-Methoxy Retinoic Acid)
Impurity reference standard · Tretinoin
- CAS number
- 81121-20-2
- Molecular formula
- C21H30O3
- Molecular weight
- 330.46
- Purity
- 95%+
- Appearance
- Light Yellow to Yellow Solid
- Storage
- -20℃±5℃
About Tretinoin EP Impurity F (4-Methoxy Retinoic Acid)
Tretinoin EP Impurity F (4-Methoxy Retinoic Acid) is a specified impurity of Tretinoin. It is registered under CAS number 81121-20-2.
The compound is characterised by its molecular formula C21H30O3 and a molecular weight of 330.46, with the two-dimensional structure shown above. Because it shares the Tretinoin scaffold, it is typically used to track process-related and degradation impurities of Tretinoin 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 Tretinoin impurities
The same parent compound, neighbouring impurity numbers.
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