2-氧代-1-吡咯烷乙酸乙酯

(2-氧代氮杂环庚-1-基)乙酸乙酯

3-hydroxy-5-phenylpent-4-enoic acid

6,8,8-trimethyl-7H-[1,3]thiazolo[3,2-b][1,2,4]triazepin-3-one

2-(4-硝基苯基氨基)乙酸