Ethyl 3-amino-6-(chloromethyl)-4-(difluoromethyl)pyridine-2-acetate
3-Amino-6-(difluoromethyl)-2-(trifluoromethyl)pyridine-4-carboxylic acid
Ethyl 4-amino-5-(chloromethyl)-3-(difluoromethyl)pyridine-2-acetate
5-Amino-2-(difluoromethyl)-4-(trifluoromethyl)pyridine-3-carboxylic acid