4-methyl-N-[(4-methylphenyl)diazenyl]aniline

6,6'-亚甲基二-2,4-二甲苯酚

4,6,4',6'-tetramethyl-2,2'-(2-aza-propanediyl)-di-phenol

3,3'-二羟基二苯胺

四乙基铵