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Chemical name 2-[2,5-dimethoxy-4-(propylthio)phenyl]ethanamine
Chemical formula C13H21NO2S
Molecular mass 255.3799
Melting point ?
CAS numbers 207740-26-9
Chemical structure of 2C-T-7

2C-T-7 is a psychedelic phenethylamine and is sometimes used as an entheogen. It was presumably first synthesized in 1986 by Alexander Shulgin. It has structural and pharmacodynamic properties similar to the drugs Mescaline, MDMA, 2C-T-2 and 4-MTA. An often used slang term for 2C-T-7 is "watusi".



2C-T-7 is 4-(n)-propylthio-2,5-dimethoxyphenethylamine with the formula C12H21O2NS. The full name of the chemical is 2-[2,5-dimethoxy-4-(propylthio)phenyl]ethanamine.


2C-T-7 is a hallucinogenic phenethylamine. In his book PIHKAL (Phenethylamines I Have Known and Loved), Shulgin lists the dosage range as 10-30mg. 2C-T-7 is generally taken orally, and produces psychedelic and entheogenic effects that last 8 to 12 hours.

The mechanism that produces the hallucinogenic and entheogenic effects of 2C-T-7 is most likely to result from action as a 5-HT2A serotonin receptor agonist in the brain, a mechanism of action shared by all of the hallucinogenic tryptamines and phenethylamines.[1]

2C-T-7 also has a separate action as a selective monoamine oxidase A inhibitor. This makes 2C-T-7 a potentially dangerous drug as at high doses it can slow down the degradation of serotonin in the brain, which can lead to serotonin syndrome and potential death without treatment.[2]</ref>

Several of the deaths involving 2C-T-7 followed co-administration of the drug with other stimulants such as MDMA and Ephedrine, and so these kind of combinations should be avoided.

Recreational usage

2C-T-7 has been sold on the street under the names "Blue Mystic," "Tweetybird Mescaline," "7th Heaven," and "Lucky 7." The drug can be taken orally or snorted, and can be lethal even in small doses.[3]

Around the year 2000, 2C-T-7 began to change from an obscure chemical to a drug used at parties and clubs in North America and Europe as it became available through a number of grey-market commercial vendors.

There have been at least three reported deaths related 2C-T-7 use, and in January of 2002, Rolling Stone published an article about 2C-T-7 entitled "The New (legal) Killer Drug". It can cause nausea and may be dangerous when combined with alcohol.


On September 20, 2002, 2C-T-7 was classified as a Schedule I substance in the United States by an emergency ruling by the DEA.


  1. ^ Fantegrossi, WE, Harrington AW, Eckler JR, Arshad S, Rabin RA, Winter JC, Coop A, Rice KC, Woods JH (September 2005). "Hallucinogen-like actions of 2,5-dimethoxy-4-(n)-propylthiophenethylamine (2C-T-7) in mice and rats.". Psychopharmacology (Berlin) 181 (3): 496-503.
  2. ^ Gallardo-Godoy, A, Fierro A, McLean TH, Castillo M, Cassels BK, Reyes-Parada M, Nichols DE. (April 7, 2005). "Sulfur-substituted alpha-alkyl phenethylamines as selective and reversible MAO-A inhibitors: biological activities, CoMFA analysis, and active site modeling.". Journal of Medicinal Chemistry 48 (7): 2407-19.
  3. ^ Partnership for a Drug-Free America. 2C-B, 2C-T-7. Retrieved on 2006-10-04.

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