3-methoxybenzo[b]xanthene-6,11,12-trione

2,3-bis[(4-methoxyphenyl)sulfanyl]naphthalene-1,4-dione

2-(4-fluorophenyl)sulfanylnaphthalene-1,4-dione

2-(4-chlorophenyl)sulfanylnaphthalene-1,4-dione

2-(4-methoxyphenyl)sulfanylnaphthalene-1,4-dione