2,5-bis(methylthio)-1,4-benzoquinone

4-butyl-4-hydroxy-cyclohexa-2,5-dienone

1,4-dihydroxy-2-(3',5'-dimethylpyrazol-1'-yl)benzene

2,3-bis(3,5-dimethylpyrazol-1-yl)benzene-1,4-diol

1,4-dihydroxy-2-(pyrazol-1'-yl)benzene