2-Hydroxy-3-nitro-4-(trifluoromethoxy)pyridine-5-sulfonamide
Ethyl 2-(difluoromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-5-carboxylate
2-(Chloromethyl)-4-iodo-3-methoxy-5-(trifluoromethoxy)pyridine
5-Hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride