4-(Difluoromethyl)-5-nitro-2-(trifluoromethyl)pyridine-3-sulfonyl chloride
Methyl 3-amino-5-(difluoromethyl)pyridine-2-carboxylate
5-(Chloromethyl)-2-fluoro-3-hydroxy-6-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-3-nitro-2-(trifluoromethyl)pyridine-6-sulfonyl chloride