4-Fluoroamphetamine
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| Other names | 4-FA; 4-FMP; para-Fluoroamphetamine; PFA; PAL-303; PAL303; Flux |
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| Routes of administration | Oral |
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| Pharmacokinetic data | |
| Duration of action | 3–7 hours |
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| Chemical and physical data | |
| Formula | C9H12FN |
| Molar mass | 153.200 g·mol−1 |
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| (what is this?) (verify) | |
4-Fluoroamphetamine (4-FA; 4-FMP; PAL-303; "Flux"), also known as para-fluoroamphetamine (PFA), is a psychoactive research chemical of the phenethylamine and substituted amphetamine chemical classes. It produces stimulant and entactogenic effects. As a recreational drug, 4-FA is sometimes sold along with related compounds such as 2-fluoroamphetamine and 4-fluoromethamphetamine.