Diphenhydramine EP Impurity A HCl
Impurity reference standard · Diphenhydramine
- CAS number
- 53499-40-4
- Molecular formula
- C16H20ClNO
- Molecular weight
- 277.79
- Purity
- 95%+
- Appearance
- White Powder
- Storage
- 2℃ ~ 8℃
About Diphenhydramine EP Impurity A HCl
Diphenhydramine EP Impurity A HCl is a specified impurity of Diphenhydramine. It is registered under CAS number 53499-40-4.
The compound is characterised by its molecular formula C16H20ClNO and a molecular weight of 277.79, with the two-dimensional structure shown above. Because it shares the Diphenhydramine scaffold, it is typically used to track process-related and degradation impurities of Diphenhydramine 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.
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