(±)-α-羟基-γ-丁内酯

4-氨基呋喃并[2,3-D]嘧啶

methyl 4-hydroxybut-2-enoate

methyl 2-(2-hydroxyethylamino)benzoate

(1-甲基-4-苯基-1H-咪唑-5-基)甲醇