3-Amino-5-(difluoromethyl)-2-methyl-4-(trifluoromethoxy)pyridine
2-Amino-4-(difluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine
2-Amino-4-(difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine
2-Amino-3-(difluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine