2-甲基噁唑-4-甲酸甲酯

diethyl 2-acetamido-2-benzylpropanedioate

dimethyl 2-acetamido-2-(piperidin-1-ylmethyl)propanedioate

2-乙酰氨基-2-(7-氯吲哚-3-甲基)丙二酸二甲酯

2-acetamido-N¹,N³-bis(2-hydroxyethyl)malonamide