Synonyms: 3,3,5,5-Tetramethyl-4,4-diphenoquinone;19358-55-5;3,3,5,5-Tetramethyldiphenoquinone;(Bi-2,5-cyclohexadien-1-ylidene)-4,4-dione, 3,3,5,5-tetramethyl- (8CI);2,5-Cyclohexadien-1-one, 4-(3,5-dimethyl-4-oxo-2,5-cyclohexadien-1-ylidene)-2,6-dimethyl-;3,3,5,5-Tetramethyldiphenylquinone;141339-04-0;3,3,5, 5-Tetramethyldiphenylquinone;3,3,5,5-Tetramethyl-4, 4-diphenoquinone;[Bi-2,5-cyclohexadien-1-ylidene]-4,4-dione, 3,3,5, 5-tetramethyl-;41395-97-5;Tetramethyl-4,4-biphenylquinone;4-(3,5-dimethyl-4-oxo-1-cyclohexa-2,5-dienylidene)-2,6-dimethyl-cyclohexa-2,5-dien-1-one;Diphenoquinone, 3,3,5,5-tetramethyl-;2,5-Cyclohexadien-1-one, 4- (3, 5-dimethyl-4-oxo-2,5-cyclohexadien-1-ylidene)-2,6-dimethyl-;Tetramethyldiphenoquinone;3,5, 3’,5’-tetramethyl-4,4’-diphenoquinone;3,5,3',5'-Tetramethyl-bicyclohexylidene- 2,5,2',5'-tetraene-4,4'-dione;