4-(2-carboxy-1-(2,4-diaminopteridin-6-yl)propan-2-yl)benzoic acid

4-甲酸甲酯苯乙酸甲酯

methyl 4-(1-methoxy-1-oxopropan-2-yl)benzoate

methyl 4-(3-(2,4-diaminopteridin-6-yl)-1-methoxy-2-methyl-1-oxopropan-2-yl)benzoate

对乙基苯甲酸