1,4-bis(4-methylphenyl)-2-butyne-1,4-dione

(2E)-1,4-bis(4-methylphenyl)but-2-ene-1,4-dione

1,4-di-p-tolyl-butane-1,4-diol

1-methyl-4-[4-(4-methylphenyl)buta-1,3-diynyl]benzene

4,4'-((1E,3E)-1-methoxybuta-1,3-diene-1,4-diyl)bis(methylbenzene)