9,10,9',10'-tetrahydro-9,9'-biacridyl

2,6-ditert-butyl-4-[(3,5-ditert-butyl-4-hydroxyphenyl)disulfanyl]phenol

2,6-ditert-butyl-4-[(3,5-ditert-butyl-4-hydroxyphenyl)trisulfanyl]phenol

2,6-ditert-butyl-4-(3,5-ditert-butyl-4-hydroxyphenyl)sulfanylphenol

2,6-ditert-butyl-4-(piperidin-1-ylmethyl)phenol