2-苯基-4,4,5,5-四甲基咪唑啉-1-氧基

4,4,5,5-四甲基咪唑烷e

3-氧代-2-苯基-4,4,5,5-四甲基咪唑啉-1-氧

1,3-dihydroxy-4,4,5,5-tetramethyl-2-phenylimidazolidine

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