3-Amino-4-methyl-2-(trifluoromethoxy)pyridine-6-carboxylic acid
3-Amino-5-(chloromethyl)-2-(trifluoromethoxy)pyridine-4-acetic acid
3-Bromo-5-chloro-2-(chloromethyl)-4-(trifluoromethoxy)pyridine
5-Amino-4-(chloromethyl)-3-(trifluoromethoxy)pyridine-2-acetic acid