Ethyl 3-amino-2-(difluoromethyl)-5-iodopyridine-6-carboxylate
2-(Difluoromethyl)-6-hydroxy-3-methylpyridine-5-carboxamide
3-(Difluoromethyl)-2-nitro-5-(trifluoromethyl)pyridine-4-sulfonyl chloride
3-Methoxy-4-methyl-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride