Methyl 6-amino-3-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxylate
6-Amino-3-bromo-2-(trifluoromethoxy)pyridine-4-acetic acid
5-Amino-2-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid
2-Amino-5-bromo-3-(trifluoromethoxy)pyridine-6-acetic acid