The molecular formula C2HNO2 (molar mass: 71.03 g/mol, exact mass: 71.0007 u) may refer to:
- Carbonocyanidic acid
- Formyl cyanate
- (Hydroxyimino)ethenone HONCCO
- 2-Nitrosoethenone ONC(H)CO
- Oximide
This set index page lists chemical structure articles associated with the same molecular formula.
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