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