quinoyl
/ˈkwɪnəʊʌɪl/ /ˈkwɪnəʊɪl/Chemistry
noun
A radical derived from benzoquinone or a quinone, bonding to another species through one (or both) oxygen atoms. Usually attributive or as a formative element in chemical names.
Origin
Mid 19th century (in an earlier sense). From quina + -oyl, after German Chinoyl.