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