Methyl 6-amino-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-4-acetate
Methyl 2-amino-3-(difluoromethyl)-5-(trifluoromethyl)pyridine-6-acetate
2-Bromo-3-chloro-6-(difluoromethyl)-4-methylpyridine
Methyl 2-amino-5-(difluoromethyl)-3-(trifluoromethyl)pyridine-6-acetate