(E)-N'-(3,5-Dibromo-2-hydroxybenzylidene)nicotinohydrazide
2,2'-(Pyridin-2-ylmethylene)diphenol
5-Iodopyridin-2-ol
1-(2-Pyridylazo)-2-naphthol
1-(5-Bromo-3-hydroxypyridin-2-yl)ethanone
2-Hydroxy-4-(methoxymethyl)-6-methyl-5-nitronicotinonitrile
Methyl 5-chloro-6-hydroxynicotinate
2-Chloro-3-hydroxypyridine 1-oxide
2-((5-Bromopyridin-2-yl)diazenyl)-5-(dimethylamino)phenol
2-Hydroxy-4-nitropyridine 1-oxide
2-((5-Bromopyridin-2-yl)diazenyl)-5-(diethylamino)phenol
5-Bromo-6-cyclopropyl-2-hydroxynicotinonitrile
2-Chloro-5-hydroxypyridine 1-oxide
4-(Pyridin-2-yldiazenyl)benzene-1,3-diol
5-Hydroxy-2-methylpyridine 1-oxide
6-Cyclopropyl-2-hydroxynicotinonitrile
6-Methylpyridin-2-ol
5-(Dimethylamino)-2-(pyridin-2-yldiazenyl)phenol
2-Bromo-3-hydroxypyridine 1-oxide hydrobromide
6-(Hydroxymethyl)pyridin-2-ol
