The molecular formula C5H9N (molar mass: 83.1317 g/mol, exact mass: 83.073499) may refer to:
- Pentanenitrile, n-BuCN, i.e. C4H9–C≡N
- Pivalonitrile, t-BuCN, i.e. (CH3)3C–C≡N
- tert-Butyl isocyanide, t-BuNC, i.e. (CH3)3C–N+≡C:−
- Tetrahydropyridine
This set index page lists chemical structure articles associated with the same molecular formula.
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