Methyl 2-cyano-3-methyl-5-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 2-chloro-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-5-carboxylate
3-Cyano-6-methyl-2-(trifluoromethoxy)pyridine-4-carboxylic acid
3-Chloro-6-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylic acid