P-Hydroxynorephedrine
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| Other names | 4-Hydroxynorephedrine para-Hydroxynorephedrine | 
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| Formula | C9H13NO2 | 
| Molar mass | 167.208 g·mol−1 | 
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p-Hydroxynorephedrine (PHN or 4-hydroxynorephedrine) is the para-hydroxy analog of norephedrine and an active sympathomimetic metabolite of amphetamine in humans. When it occurs as a metabolite of amphetamine, it is produced from both p-hydroxyamphetamine and norephedrine.