2,5,8-trimethoxynaphthalene-1,4-dione

2-(2,5-dihydroxy-4-methoxyphenyl)-5-methoxycyclohexa-2,5-diene-1,4-dione

3,6-dihydroxy-2,7-dimethoxydibenzofurane

(4,5-diacetyloxy-2-methoxyphenyl) acetate

2-methoxy-8-methylnaphthalene-1,4-dione