11-hydroxy-3-methoxybenzo[b]xanthen-12-one

8-(chloromethyl)-7-methoxy-2-methylchromen-4-one

3,8-bis(chloromethyl)-7-methoxy-2-methylchromen-4-one

7-methoxy-2-(4-methyl-3-nitrophenyl)chromen-4-one

2-(3,5-dinitrophenyl)-7-methoxychromen-4-one