Ethyl 5-(difluoromethyl)-2-methoxy-3-(trifluoromethyl)pyridine-4-acetate
Ethyl 4-(difluoromethyl)-3-methoxy-6-(trifluoromethyl)pyridine-2-acetate
2-(Difluoromethyl)-5-methyl-6-nitro-3-(trifluoromethyl)pyridine
Ethyl 4-(difluoromethyl)-3-methoxy-5-(trifluoromethyl)pyridine-2-acetate