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