Synonyms: 2,5-Cyclohexadien-1-one, 2,6-bis(1,1-dimethylethyl)-4-ethylidene-;2,5-Cyclohexadien-1-one, 2,6-di-tert-butyl-4-ethylidene-;2,6-Bis(1,1-dimethylethyl)-4-ethylidene-2,5-cyclohexadiene-1-on;2,6-Bis(1,1-dimethylethyl)-4-ethylidene-2,5-cyclohexadiene-1-one;NSC 14452;NSC 87400;2,6-Di-tert-butyl-4-ethylidenecyclohexa-2,5-en-1-one;2,6-di-tert-butyl-4-ethylidenecyclohexa-2,5-dien-1-one