4,5-Dimethoxycarbonyl-1,8-naphthalenedicarboxylic anhydride

6-methoxy-1-methylpyrimidine-2,4-dione

methyl 2-aminocyclopentene-1-carbodithioate

1-benzyl-2,4-dimethoxybenzene

4-[(4-methoxyphenyl)diazenyl]benzoic acid