2-t-butyl-5-isobutyl-1,4-dihydroxybenzene

2,5-ditert-butyl-3-chlorocyclohexa-2,5-diene-1,4-dione

6-tert-butyl-2,2-dimethyl-3H-1-benzofuran-5-ol

(4-acetyloxy-2,5-ditert-butylphenyl) acetate