Ethyl 2,5-difluoro-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 2-amino-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-acetate
Ethyl 2-amino-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-acetate
Ethyl 2-amino-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-acetate