2-Amino-4-bromo-3-(trifluoromethoxy)pyridine-6-carboxylic acid
2-Amino-3-(difluoromethyl)-5-fluoro-6-(trifluoromethoxy)pyridine
5-Amino-3-fluoro-2-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Amino-3-(difluoromethyl)-4-fluoro-5-(trifluoromethoxy)pyridine