Methyl 4-(difluoromethyl)-5-methyl-3-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 4-(difluoromethyl)-2-methyl-3-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 2,6-diamino-3-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 3,6-diamino-4-(trifluoromethoxy)pyridine-2-carboxylate