2,5-Cyclohexadiene-1,4-dione, 2,5-diphenyl- 2,5-Diphenyl-1,4-benzoquinone 2,5-Diphenyl-4-benzoquinone 2,5-Diphenyl-p-benzoquinone 844-51-9 AI3-61046 EINECS 212-680-8 NSC 8725 p-Benzoquinone, 2,5-diphenyl- (8CI)