4-Chloro-5-cyano-3-nitro-2-(trifluoromethoxy)pyridine
3-Bromo-4-(chloromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylic acid
4-Chloro-3-cyano-2-nitro-5-(trifluoromethoxy)pyridine
5-Bromo-2-(chloromethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine