methyl 3-(2-thiophen-3-ylethylamino)but-2-enoate

(r)-n-boc-3-氨基丁酸甲酯

5-羟基甲基-2-甲基呋喃-3-羧酸甲酯

methyl 2-(2,1,3-benzoxadiazol-4-yl)-3-oxopent-4-enoate

N'-octanoyloctanehydrazide