Methyl 6-bromo-4-cyano-3-(trifluoromethoxy)pyridine-2-carboxylate
6-Bromo-4-(difluoromethyl)-2-iodo-3-(trifluoromethoxy)pyridine
Methyl 2-bromo-3-cyano-5-(trifluoromethoxy)pyridine-6-carboxylate
3-Bromo-5-chloro-2-(trifluoromethoxy)pyridine-4-carboxylic acid