1,4-二羟基-2,2,3,3-四甲基-哌嗪

2-(1,3-苯并二氧戊环-5-基)-4,4,5,5-四甲基-1,3-咪唑烷二醇

2-(4-bromophenyl)-1,3-dihydroxy-4,4,5,5-tetramethylimidazolidine

2-(1,3-dihydroxy-4,4,5,5-tetramethylimidazolidin-2-yl)phenol

2-(4-硝基苯基)-4,4,5,5-四甲基咪唑啉-3-氧化物-1-氧基