Methyl 6-(difluoromethyl)-4-methoxy-3-(trifluoromethyl)pyridine-2-acetate
Methyl 2-(difluoromethyl)-4-methoxy-3-(trifluoromethyl)pyridine-6-acetate
Methyl 2-(difluoromethyl)-3-methoxy-4-(trifluoromethyl)pyridine-5-carboxylate
3-(Difluoromethyl)-6-methoxy-2-(trifluoromethyl)pyridine-5-carboxylic acid