Methyl 6-chloro-2-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
5-Chloro-2-nitro-3-(trifluoromethoxy)pyridine-4-carboxylic acid
Ethyl 6-bromo-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 2-bromo-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate