2-Amino-6-methoxy-3-(trifluoromethoxy)pyridine-5-carboxylic acid
6-Amino-3-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Amino-5-methoxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid
2-Amino-4-methoxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid