ethyl 4-[[4-(diethylamino)phenyl]diazenyl]benzoate

4-联苯甲酸乙酯

对羟基苯甲酸乙酯

4-氯苯甲酸乙酯

ethyl 4-[2-(4-oxonaphthalen-1-ylidene)hydrazinyl]benzoate