1-(2-hydroxyphenyl)-3-thiophen-2-ylpropane-1,3-dione

1-(2-hydroxyphenyl)-3-(2-methoxyphenyl)propane-1,3-dione

1-phenylchromeno[4,3-c]pyrazol-4-one

4-氧代-4H-1-苯并吡喃-2-甲酰氯

3-benzoyl-4-methylchromen-2-one