5-乙氧基-3-联苯乙酸

4'-氯-5-乙氧基-3-联苯乙酸

4'-氯-5-甲氧基-3-联苯乙酸乙酯

4'-氯-5-羟基-(1,1'-联苯)-3-乙酸乙酯

ethyl 2-hydroxy-2-methyl-4-phenylbut-3-ynoate