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