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