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