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