Clinical data
ATC code N02BA07 (WHO)
CAS Number 938-73-8 YesY
PubChem (CID) 3282
ChemSpider 3167 YesY
KEGG D01466 YesY
ECHA InfoCard 100.012.133
Chemical and physical data
Formula C9H11NO2
Molar mass 165.189 g/mol
3D model (Jmol) Interactive image

Ethenzamide is a common analgesic and anti-inflammatory drug that is used for the relief of fever, headaches, and other minor aches and pains.[1][2] It is an ingredient in numerous cold medications and many prescription analgesics.


  1. Darias, V.; Bravo, L.; Abdallah, S. S.; Sánchez Mateo, C. C.; Expósito-Orta, M. A.; Lissavetsky, J.; Manzanares, J. (1992). "Synthesis and preliminary pharmacological study of thiophene analogues of the antipyretic and analgesic agent ethenzamide". Archiv der Pharmazie. 325 (2): 83–87. doi:10.1002/ardp.19923250206. PMID 1605721.
  2. Wang, P. J.; Guo, H. R. (2004). "Frequent analgesics consumption in migraineurs: Comparison between chronic and episodic migraineurs". The Journal of Headache and Pain. 5: 30. doi:10.1007/s10194-004-0065-x.
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