Methyl 6-(difluoromethyl)-3-methoxy-2-(trifluoromethyl)pyridine-4-carboxylate
Methyl 2-(difluoromethyl)-5-methoxy-4-(trifluoromethyl)pyridine-3-carboxylate
3-(Difluoromethyl)-4-methoxy-6-nitro-2-(trifluoromethyl)pyridine
3-(Difluoromethyl)-4-methoxy-5-nitro-2-(trifluoromethyl)pyridine