4-叔丁氧基乙酰乙酸乙酯

1-(bromomethyl)benzo[f]chromen-3-one

2-(2-氯乙酰氨基)-4-噻唑乙酸乙酯

2-[2-[(E)-2-(1,3-benzodioxol-5-yl)ethenyl]-1,3-thiazol-4-yl]acetic acid

ethyl 4-acetyloxy-3-oxobutanoate