Ethyl 3-(difluoromethyl)-4-nitro-2-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 3-(difluoromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine-5-carboxylate
6-(Difluoromethyl)-2-methoxy-3-(trifluoromethoxy)pyridine-4-methanol
2-(Difluoromethyl)-6-methoxy-4-(trifluoromethoxy)pyridine-3-methanol