1-甲酰基-6,7-二氢-5H-吡咯里嗪

2-Methyl-6-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)benzoic aci d

3-hydroxy-3-methoxycarbonylpentanedioate

1,5-二甲基柠檬酸盐

2-hydroxy-2-(2-methoxy-2-oxoethyl)butanedioate