2-[(3,4-dimethoxyphenyl)methylidene]butanedioic acid

2,3-bis[(3,4-dimethoxyphenyl)methylidene]butanedioic acid

1,4-bis(benzylsulfanyl)benzene

3-acetyl-2-hydroxybenzaldehyde

6-phenylsulfanylhexylsulfanylbenzene