Aryl
ORGANIC FUNCTIONAL GROUP DERIVED FROM AN AROMATIC RING
Triaryl; Aryl hydrocarbons; Aryl; Aryl groups
In organic chemistry, an aryl is any functional group or substituent derived from an aromatic ring, usually an aromatic hydrocarbon, such as phenyl and naphthyl. "Aryl" is used for the sake of abbreviation or generalization, and "Ar" is used as a placeholder for the aryl group in chemical structure diagrams, analogous to “R” used for any organic substituent.