1-[2-(ethylamino)-4-methyl-1,3-thiazol-5-yl]ethanone

1-(4-甲氧基-2-苯并呋喃)乙酮

1,1'-(3-(dimethylamino)-4-methoxy-2,3-dihydrobenzofuran-2,2-diyl)bis(ethan-1-one)

3-hydroxypentane-2,4-dione

4-formyloxy-pentane-2,3-dione