Methyl 6-(difluoromethyl)-4-methyl-2-(trifluoromethyl)pyridine-3-carboxylate
Ethyl 2-(difluoromethyl)-4-methyl-5-(trifluoromethyl)pyridine-3-carboxylate
Methyl 6-(difluoromethyl)-4-methyl-3-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 2-(difluoromethyl)-4-methyl-3-(trifluoromethyl)pyridine-5-carboxylate