Ethyl 5-(2-acetoxyethyl)-2-bromo-4-methylthiophene-3-carboxylate

ethyl 5-(2-acetoxyethyl)-2-ethoxy-4-hydroxy-4-methyltetrahydrothiophene-3-carboxylate

α-乙酰基-γ-丁内酯

3-乙酰基-3-氯二氢呋喃-2(3H)-酮

Ethyl 5-(2-acetoxyethyl)-2-amino-4-methylthiophene-3-carboxylate