4-(chloromethyl)-5,7-dihydroxychromen-2-one

ethyl 4-iodo-3-oxobutanoate

ethyl 2-(1-acetyl-4,6-dimethoxyindol-3-yl)acetate

ethyl 4-[2-(dimethylamino)ethoxy]-3-oxobutanoate

4-氯甲基-6,7-二羟基-2-苯并吡酮