4-Amino-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Amino-3-iodo-5-(trifluoromethoxy)pyridine-4-acetic acid
Methyl 5-amino-3-(chloromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
4-Amino-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-carboxylic acid