Topic summary
Chromenylium
Extracted from the Wikipedia article Pyrylium.
Chromenylium ion
One bicyclic pyrylium ion is called benzopyrylium ion (IUPAC: chromenylium ion) (formula: C9H7O, molar mass: 131.15 g/mol, exact mass: 131.04968983). It can be seen as a charged derivative of 2H-1-benzopyran (IUPAC: 2H-chromene, C9H8O), or a (charged) substituted heterocyclic derivative of naphthalene (C10H8).