Clinical data
ATC code
  • 2-ethoxybenzamide
CAS Number
PubChem CID
CompTox Dashboard (EPA)
ECHA InfoCard100.012.133 Edit this at Wikidata
Chemical and physical data
Molar mass165.192 g·mol−1
3D model (JSmol)
  • O=C(c1ccccc1OCC)N
  • InChI=1S/C9H11NO2/c1-2-12-8-6-4-3-5-7(8)9(10)11/h3-6H,2H2,1H3,(H2,10,11) checkY

Ethenzamide (2-ethoxybenzamide) 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 also an ingredient in numerous cold medications and many prescription analgesics.[citation needed] It is used as an over-the-counter drug in Japan, often in combination with caffeine and acetaminophen, where it is marketed for uses including toothache, menstrual cramps, headache, and fever.[3]

It is metabolized in vivo into salicylamide.[4]


  1. ^ Darias V, Bravo L, Abdallah SS, Sánchez Mateo CC, Expósito-Orta MA, Lissavetsky J, Manzanares J (February 1992). "Synthesis and preliminary pharmacological study of thiophene analogues of the antipyretic and analgesic agent ethenzamide". Archiv der Pharmazie. 325 (2): 83–7. doi:10.1002/ardp.19923250206. PMID 1605721. S2CID 28098596.
  2. ^ Wang PJ, Guo HR (2004). "Frequent analgesics consumption in migraineurs: Comparison between chronic and episodic migraineurs". The Journal of Headache and Pain. 5 (1): 30–35. doi:10.1007/s10194-004-0065-x. PMC 3452147.
  3. ^ "OTC Pain Relief Medicine in Japan". Life Abroad. Retrieved March 22, 2021.
  4. ^ "エテンザミド" [Ethenzamide] (in Japanese). Retrieved March 22, 2021.