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| Other names | MDP; MDPH; 3,4-Methylenedioxyphentermine; 3,4-Methylenedioxy-α,α-dimethylphenethylamine |
| Routes of administration | Oral [1] |
| Drug class | Psychoactive drug |
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| Duration of action | 3–5 hours [1] |
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| Chemical and physical data | |
| Formula | C11H15NO2 |
| Molar mass | 193.246 g·mol−1 |
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3,4-Methylenedioxyphentermine (MDPH) is a psychoactive drug of the amphetamine family. MDPH was first synthesized by Alexander Shulgin. [1] Very little data exists about the pharmacological properties, metabolism, and toxicity of MDPH. [1]
In his book PiHKAL (Phenethylamines i Have Known And Loved) , the dose range is listed as 160–240 mg, and the duration as 3 to 5 hours. [1] MDPH's effects are very similar to those of MDA: they both are smooth and "stoning," and do not cause any visuals. [1] They also alter dreams and dream patterns. [1] But it is said to have none of the magic of MDMA. [1] Shulgin describes MDPH as a promoter; it promotes the effects of other drugs, similarly to 2C-D. [1]
The chemical synthesis of MDPH has been described. [1]
The N-methyl derivative, 3,4-methylenedioxy-N-methylphentermine (MDMPH), has been described by Shulgin as lacking MDMA-like effects. [2] Accordingly, MDMPH, as well as MDPH, were found to be inactive as serotonin releasing agents in vitro . [2] [3]
This substance is a Class A drug in the Drugs controlled by the UK Misuse of Drugs Act. [4]