Ethyl 3-(difluoromethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxylate
5-Hydroxy-2-nitro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
Ethyl 2-hydroxy-5-nitro-6-(trifluoromethoxy)pyridine-3-acetate
6-(Aminomethyl)-2-iodo-4-methoxy-3-(trifluoromethoxy)pyridine