2-(tetrazol-1-yl)ethyl acetate

3-(4-硝基-苯基)-2,4-戊二酮

N-(6,6-dimethyl-4-oxooxan-3-yl)acetamide

methyl 2-acetamido-2-cyanoacetate

(5-oxo-6-pent-4-enyl-2H-pyran-2-yl) acetate