Clinical data
AHFS/Drugs.com International Drug Names
Routes of
ATC code M01AE05 (WHO)
Legal status
Legal status
  • POM
CAS Number 36330-85-5
PubChem (CID) 3335
DrugBank DB08981 YesY
ChemSpider 3218 YesY
UNII 9815R1WR9B YesY
KEGG D01344 YesY
ChEBI CHEBI:31599 YesY
ECHA InfoCard 100.048.148
Chemical and physical data
Formula C16H14O3
Molar mass 254.2854
3D model (Jmol) Interactive image

Fenbufen is a non-steroidal anti-inflammatory drug in the propionic acid derivatives class.[1]

It was introduced by American Cyanamid under the trade name Lederfen in the 1980s and was withdrawn from markets in the developed world due to liver toxicity in 2010.[2][3]:370, 383-384

As of 2015 it was available in Taiwan and Thailand under several brand names.[4]


  1. Brogden RN. Non-steroidal anti-inflammatory analgesics other than salicylates. Drugs. 1986;32 Suppl 4:27-45. Review. PMID 3552584
  2. Monthly Index of Medical Specialities Deleted products 2010
  3. Lewis JH and Stine JG. Nonsteroidal Antiinflammatory Drugs and Leukotriene Receptor Antagonists. Chapter 22 in Drug-Induced Liver Disease, 3rd Edition. Eds Neil Kaplowitz N and DeLeve LD. Academic Press, 2013 ISBN 9780123878182
  4. Drugs.com Drugs.com international listings for fenbufen Page accessed June 25, 2015

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