Methyl 4-(difluoromethyl)-3-methoxy-2-(trifluoromethyl)pyridine-5-acetate
Methyl 3-(difluoromethyl)-5-methoxy-2-(trifluoromethyl)pyridine-4-acetate
Methyl 5-(difluoromethyl)-4-methoxy-3-(trifluoromethyl)pyridine-2-acetate
2-(Difluoromethyl)-3-methoxy-4-nitro-5-(trifluoromethyl)pyridine