4-(Difluoromethyl)-3-nitro-5-(trifluoromethoxy)pyridine-2-sulfonamide
Methyl 2-(difluoromethyl)-3-iodo-6-methoxypyridine-4-carboxylate
Methyl 2-(bromomethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-acetate
Methyl 4-(chloromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-6-carboxylate