Ethyl 6-(difluoromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 2-(difluoromethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-4-acetate
6-Hydroxy-4-methoxy-2-(trifluoromethoxy)pyridine-3-carbonyl chloride
4-Fluoro-3-nitro-5-(trifluoromethoxy)pyridine-2-carboxylic acid