5-Amino-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
2-Bromo-3-chloro-4-(trifluoromethoxy)pyridine-5-sulfonyl chloride
2-Amino-6-methyl-4-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Bromo-4-fluoro-6-(trifluoromethoxy)pyridine-3-carboxylic acid