1-(3,5-di-tert-butyl-2-hydroxyphenyl)-3,5-dimethylpyridin-1-ium chloride

2,4-di-tert-butyl-6-(1H-imidazol-1-yl)phenol

1-(1,3,5-tri-tert-butyl-4-oxo-2,5-cyclohexadienyl)imidazole