2,3-di-tert-butyl-4-ethyl-[1,2,4]oxadiazolidine-5-thione
4-benzyl-2,3-di-tert-butyl-[1,2,4]oxadiazolidine-5-thione
2,3-di-tert-butyl-4-(4-chloro-phenyl)-[1,2,4]oxadiazolidine-5-thione
2,2,5,5-tetramethyl-4-(4-trifluoromethylphenyl)-3-azahexane-3-nitroxide
2-(Methylamino)-3,3-dimethyl-N-(2,4,6-tribromphenyl)butanamid