Ethyl 2-amino-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 6-amino-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylate
6-Amino-4-methoxy-3-nitro-2-(trifluoromethoxy)pyridine
Ethyl 2-amino-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxylate