WIN 35428

WIN 35428

WIN 35428
Systematic (IUPAC) name
methyl (1R,2S,3S,5S)-3-(4-fluorophenyl)-8-methyl- 8-azabicyclo[3.2.1]octane-2-carboxylate
Clinical data
Legal status
  • Schedule II (US)
CAS number  YesY
ATC code ?
ChemSpider  N
Synonyms CFT, WIN 35,428
Chemical data
Formula C16H20FNO2 
Mol. mass 277.33 g/mol (free base); 565.55 g/mol (anhydrous naphthalenedisulfonate)
Physical data
Melt. point 202–204 °C (396–399 °F)
Spec. rot -62.5°

(–)-2-β-Carbomethoxy-3-β-(4-fluorophenyl)tropane (β-CFT, WIN 35,428) is a stimulant drug used in scientific research. CFT is a phenyltropane based dopamine reuptake inhibitor and is structurally derived from cocaine. It is around 3-10x more potent than cocaine and lasts around 7 times longer based on animal studies. While the naphthalenedisulfonate salt is the most commonly used form in scientific research due to its high solubility in water, the free base and hydrochloride salts are known compounds and can also be produced. The tartrate is another salt form that is reported.[1]


CFT was first reported by Clarke and co-workers in 1973.[2] This drug is known to function as a "positive reinforcer" (although it is less likely to be self-administered by rhesus monkeys than cocaine).[1] Tritiated CFT is frequently used to map binding of novel ligands to the DAT, although the drug also has some SERT affinity.

Radiolabelled forms of CFT have been used in humans and animals to map the distribution of dopamine transporters in the brain. CFT was found to be particularly useful for this application as a normal fluorine atom can be substituted with the radioactive isotope 18F which is widely used in Positron emission tomography. Another radioisotope-substituted analog [11C]WIN 35,428 (where the carbon atom of either the N-methyl group, or the methyl from the 2-carbomethoxy group of CFT, has been replaced with 11C) is now more commonly used for this application, as it is quicker and easier in practice to make radiolabelled CFT by methylating nor-CFT or 2-desmethyl-CFT than by reacting methylecgonidine with parafluorophenylmagnesium bromide, and also avoids the requirement for a licence to work with the restricted precursor ecgonine.

CFT is about as addictive as cocaine in animal studies, but is taken less often due to its longer duration of action. Potentially this could make it a suitable drug to be used as a substitute for cocaine, in a similar manner to how methadone is used as a substitute for opiates in treating addiction.

Street drug

In August 2010, some media sources claimed that the designer drug Ivory Wave contained WIN 35,428.[3] However, samples of Ivory Wave have been found to contain MDPV,[4] so the legitimacy of these claims remains unclear.

Legal status

CFT is not specifically scheduled in the USA,[5] though it is considered by chemical supply companies and perhaps law enforcement to be covered under the Federal Analog Act as a Schedule II due to its close similarity in structure and function to the schedule II drug cocaine.[6][7] Its legal status in other countries is unclear, though it may be illegal in Germany (Kontrollierte Droge) as well.[7]


Administering 100 mg/kg of CFT to rats only resulted in convulsions being reported, whereas CIT had the ability to cause death at this dose.[8]

See also


  1. ^ a b Wee, S; Carroll, FI; Woolverton, WL (2006). "A reduced rate of in vivo dopamine transporter binding is associated with lower relative reinforcing efficacy of stimulants". Neuropsychopharmacology 31 (2): 351–62.  
  2. ^ Clarke, RL; Daum, SJ; Gambino, AJ; Aceto, MD; Pearl, J; Levitt, M; Cumiskey, WR; Bogado, EF (1973). "Compounds affecting the central nervous system. 4. 3 Beta-phenyltropane-2-carboxylic esters and analogs". Journal of Medical Chemistry 16 (11): 1260–7.  
  3. ^ "Ivory Wave: The new meow meow?". 2010-08-17. Retrieved 2010-08-23. 
  4. ^ Sam Jones and Mike Power (2010-08-17). "Ivory Wave drug implicated in death of 24-year-old man | Society |". London: Guardian. Retrieved 2010-08-23. 
  5. ^ "DEA, Drug Scheduling". Retrieved 2011-04-07. 
  6. ^ "Controlled Substances in Research Policy (Portland VA Medical Center)" (PDF). Retrieved 2010-08-23. 
  7. ^ a b "C124 β-CFT naphthalenedisulfonate monohydrate solid". Retrieved 2010-08-23. 
  8. ^ Carroll, FI; Runyon, SP; Abraham, P; Navarro, H; Kuhar, MJ; Pollard, GT; Howard, JL (2004). "Monoamine transporter binding, locomotor activity, and drug discrimination properties of 3-(4-substituted-phenyl)tropane-2-carboxylic acid methyl ester isomers". Journal of Medical Chemistry 47 (25): 6401–9.  


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  • Reith, MEA., Sershen H, Lajtha A. Saturable (3H)cocaine binding in central nervous system of mouse. Life Sciences. 1980 Sep 22;27(12):1055-62.
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