tert-Butyl-1,4-benzoquinone3602-55-9100 % similar 2,5-Di-tert-butyl-1,4-benzoquinone2460-77-760 % similar 2,6-Di-tert-butyl-1,4-benzoquinone719-22-254 % similar Methyl-1,4-benzoquinone553-97-948 % similar 3,5-Di-tert-butyl-1,2-benzoquinone3383-21-942 % similar 4-[3,5-Bis(1,1-dimethylethyl)-4-oxo-2,5-cyclohexadien-1-ylidene]-2,6-bis(1,1-dimethylethyl)-2,5-cyclohexadien-1-one2455-14-340 % similar 1,4-Benzoquinone106-51-433 % similar