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| Other names | TeMPEA | 
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| Formula | C12H19NO4 | 
| Molar mass | 241.287 g·mol−1 | 
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2,3,4,5-Tetramethoxyphenethylamine (TeMPEA) is a drug of the phenethylamine family related to mescaline (3,4,5-trimethoxyphenethylamine) and the 2C drugs (4-substituted 2,5-dimethoxyphenethylamines). [1] [2] It was reported to be twice as potent as mescaline in producing behavioral changes in animals. [2] [3] However, it does not seem to have been tested in humans. [1] [2] The drug was not described in Alexander Shulgin's PiHKAL, though it was included in The Shulgin Index, Volume One: Psychedelic Phenethylamines and Related Compounds . [1] A derivative is 2,3,4,5-tetramethoxyamphetamine (TeMA), which was included in PiHKAL, and was reported to be inactive in humans at the tested doses. [4]