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