Systematic (IUPAC) name
Clinical data
Legal status
  • Prescription only
CAS number
10488-36-5 (HCl)
ATC code None
Chemical data
Formula C17H21NO 
Mol. mass 255.355 g/mol

Tofenacin (INN; Elamol, Tofacine, Tofalin), or tofenacin hydrochloride (USAN), also sometimes called mono-N-desmethylorphenadrine, is an antidepressant drug with a tricyclic-like structure which was developed and marketed in the United Kingdom and Italy in 1971 and 1981, respectively, by Brocades-Stheeman & Pharmacia (now part of Astellas Pharma).[1][2][3] It acts as a serotonin-norepinephrine reuptake inhibitor,[4] and based on its close relation to orphenadrine, may also possess anticholinergic and antihistamine properties. In addition to its use as a pharmaceutical medication, tofenacin is the major active metabolite of orphenadrine and likely plays a role in its beneficial effects against depressive symptoms seen in Parkinson's disease patients.[5][6]


Tofenacin synthesis: Harms August Franciscus; Koninklijke Pharma Fab Nv; U.S. Patent 3,407,258 (1964).

According to Lednicer, a second method is to react benzhydrol with ethyl bromoacetate to form α-alkoxyester, saponify, form methylamide, then reduce with LAH.

See also


  1. ^ Index Nominum 2000: International Drug Directory. Taylor & Francis US. 2000. p. 1041.  
  2. ^ J. Buckingham (1996). Dictionary of organic compounds: Chemical Abstracts Service registry number index. CRC Press. p. 6074.  
  3. ^ Pharmaceutical Manufacturing Encyclopedia, 3rd Edition. Elsevier. p. 3268.  
  4. ^ Gwynn Pennant Ellis; Geoffrey Buckle West (1 January 1978). Progress in Medicinal Chemistry. Elsevier. p. 284.  
  5. ^ Capstick N, Pudney H (1976). "A comparative trial of orphenadrine and tofenacin in the control of depression and extrapyramidal side-effects associated with fluphenazine decanoate therapy". The Journal of International Medical Research 4 (6): 435–40.  
  6. ^ Altamura AC, Mauri MC, De Novellis F, Percudani M, Vampini V (November 1989). "Residual neuroleptic-induced parkinsonian symptoms in schizophrenia. A naturalistic study with orphenadrine". Pharmacopsychiatry 22 (6): 246–9.