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