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