4-Amino-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxylic acid
5-Bromo-4-fluoro-3-nitro-2-(trifluoromethoxy)pyridine
3-Bromo-4-(fluoromethyl)-5-methoxy-2-(trifluoromethoxy)pyridine
3-Amino-5-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylic acid