Ethyl 2-amino-5-(difluoromethyl)-4-(trifluoromethyl)pyridine-3-acetate
4-Bromo-6-chloro-3-(difluoromethyl)pyridine-2-carboxaldehyde
Ethyl 5-amino-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-4-acetate
Ethyl 6-amino-4-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-acetate