2-Amino-6-(fluoromethyl)-5-(trifluoromethoxy)pyridine-3-carboxylic acid
4-Amino-3-methyl-6-(trifluoromethoxy)pyridine-2-acetic acid
2-Amino-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxylic acid
4-Amino-2-methyl-6-(trifluoromethoxy)pyridine-3-acetic acid