4-[bis(sulfanyl)methylidene]-3,5-dihydroxycyclohexa-2,5-dien-1-one

benzene-1,3,5-triol,methanesulfonic acid

1,3,5-trimethoxyxanthen-9-one

7-hydroxy-5-methoxy-3-(4-methoxyphenyl)chromen-4-one

1-(2,6-dihydroxy-4-prop-2-enoxyphenyl)-3-methylbutan-1-one