Promethazine EP Impurity D
Impurity reference standard · Promethazine
- CAS number
- 7640-51-9
- Molecular formula
- C17H20N2OS
- Molecular weight
- 300.42
- Purity
- 95%+
- Appearance
- Grey Powder
- Storage
- -20℃±5℃
About Promethazine EP Impurity D
Promethazine EP Impurity D is a specified impurity of Promethazine. It is registered under CAS number 7640-51-9.
The compound is characterised by its molecular formula C17H20N2OS and a molecular weight of 300.42, with the two-dimensional structure shown above. Because it shares the Promethazine scaffold, it is typically used to track process-related and degradation impurities of Promethazine 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 Promethazine impurities
The same parent compound, neighbouring impurity numbers.
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