5-Bromo-4-cyano-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
2-Amino-4-(chloromethyl)-3-(trifluoromethoxy)pyridine-5-carboxylic acid
3-Bromo-4-cyano-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
2-Amino-3-(chloromethyl)-5-(trifluoromethoxy)pyridine-6-carboxylic acid