Ethyl 4-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 2-(difluoromethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-3-carboxylate
3-(Bromomethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-6-carboxylic acid
2-(Bromomethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine-5-carboxylic acid