2-Amino-6-bromo-4-(trifluoromethoxy)pyridine-3-acetic acid
4-Amino-5-(difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine
4-Amino-3-(difluoromethyl)-5-nitro-2-(trifluoromethoxy)pyridine
4-Amino-6-(difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine