2H-四唑-2-乙酸

(4-甲氧基苯氧基)乙酸乙酯

Methyl-ethoxycarbonylmethyl-<2-ethoxycarbonyl-ethyl>-amin

N-(4-甲氧基苯基)甘氨酸

2-(环戊氧基)乙醇