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