104-82-5
4-甲基氯苄
+
99-96-7
乙酰水杨酸杂质A
→
56442-19-4
4-[(4-甲基苄基)-氧基]苯羧酸
120-47-8
尼泊金乙酯
56441-63-5
4-ethoxycarbonylphenoxy-(4'-methylphenyl)-methane