Synonyms: 3-Imidazolin-1-yloxy,2,2,5,5-tetramethyl-4-phenyl-, 3-oxide (8CI); 2,2,5,5-Tetramethyl-4-phenyl-3-imidazolidine-3-oxide-1-oxyl;2,2,5,5-Tetramethyl-4-phenyl-3-imidazolin-1-oxyl 3-oxide;4-Phenyl-2,2,5,5-tetramethyl-3-imidazoline-3-oxide-1-oxyl