2-Chloro-4-butyrylpyridine

1-(2-Chloro-4-pyridyl)-1,5-hexanedione

2-Chloro-4-pyridyl 1-ethylpentyl ketone

2-Methoxy-3-thiazoylpyridine

2-Methoxy-5-thenoylpyridine

3-(2-Acetoxybenzoyl)-2-chloropyridine

3-(3-Acetoxybenzoyl)-5-bromopyridine

6-Methyl-2-(2-trifluoromethylbenzoyl)pyridine

2-(3-Cyanobenzoyl)-6-methylpyridine

2-(4-Isopropoxybenzoyl)-6-methylpyridine

2-(2,3-Difluorobenzoyl)-6-methylpyridine