(Bi-2,5-cyclohexadien-1-ylidene)-4,4'-dione, 3,3',5,5'-tetramethyl- (8CI) 141339-04-0 19358-55-5 2,5-Cyclohexadien-1-one, 4-(3,5-dimethyl-4-oxo-2,5-cyclohexadien-1-ylidene)-2,6-dimethyl- 3,3',5,5'-Tetramethyl-4,4'-diphenoquinone 3,3',5,5'-Tetramethyldiphenoquinone 3,3',5,5'-Tetramethyldiphenylquinone 41395-97-5 4906-22-3 Diphenoquinone, 3,3',5,5'-tetramethyl- EINECS 225-535-9 NSC 93973 Tetramethyl-4,4'-biphenylquinone Tetramethyldiphenoquinone