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Systematic (IUPAC) name
Clinical data
AHFS/ International Drug Names
Legal status
Routes Oral
CAS number 61422-45-5 YesY
ATC code L01BC04
PubChem CID 2577
ChemSpider 2479 N
Synonyms 1-hexylcarbamoyl-5-fluorouracil
Chemical data
Formula C11H16FN3O3 
Mol. mass 257.261 g/mol
 N (what is this?)  (verify)

Carmofur (INN) or HCFU (1-hexylcarbamoyl-5-fluorouracil) is a pyrimidine analogue used as an antineoplastic agent. It is a derivative of fluorouracil.

Mechanism of action[edit]


Breast Cancer[edit]

Colorectal Cancer[edit]

Carmofur, in its oral form, has also been used as adjuvant chemotherapy for curatively resected colorectal cancer patients. Trials and meta-analyses have confirmed that the drug is effective on patients with this cancer type, extending their survival.[1]

Adverse effects[edit]

As fluorouracil, carmofur has been known to induce leukoencephalopathy.[2][3][4]


  1. ^ Sakamoto, J; Hamada, C; Rahman, M; Kodaira, S; Ito, K; Nakazato, H; Ohashi, Y; Yasutomi, M (2005). "An Individual Patient Data Meta-analysis of Adjuvant Therapy with Carmofur in Patients with Curatively Resected Colon Cancer". Japanese Journal of Clinical Oncology 35 (9): 536–544. doi:10.1093/jjco/hyi147. PMID 16155120. 
  2. ^ Yamada T, Okamura S, Okazaki T, et al. (June 1989). "Leukoencephalopathy following treatment with carmofur: a case report and review of the Japanese literature". Asia Oceania J Obstet Gynaecol 15 (2): 161–8. PMID 2667512. 
  3. ^ Mizutani T (February 2008). "[Leukoencephalopathy caused by antineoplastic drugs]". Brain Nerve (in Japanese) 60 (2): 137–41. PMID 18306661. 
  4. ^ Baehring JM, Fulbright RK (May 2008). "Delayed leukoencephalopathy with stroke-like presentation in chemotherapy recipients". J Neurol Neurosurg Psychiatr 79 (5): 535–9. doi:10.1136/jnnp.2007.123737. PMID 17682013.