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| Formula | C12H17NO |
| Molar mass | 191.274 g·mol−1 |
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4-Methylphenmetrazine (mephenmetrazine, 4-MPM, PAL-747) is a recreational designer drug with stimulant effects. It is a substituted phenylmorpholine derivative, closely related to better known drugs such as phenmetrazine and 3-fluorophenmetrazine. It was first identified in Slovenia in 2015, [1] [2] and has been shown to act as a monoamine releaser with some preference for serotonin release. [3] [4]