5,8-dimethylnaphthalene-1,4-dione

4-(2,5-Dihydroxyphenyl)benzoic acid

(+/-)-2,7-dimethyl-(4arH.8atH.9acH.10atH)-1,4,4a,5,8,8a,9a,10a-octahydro-anthraquinone

2,6-二甲基-1,4,4a,5,8,8a,9a,10a-八氢蒽-9,10-二酮

cis-4a,5,8,8a-Tetrahydro-1,4-naphthoquinone