Methyl 3-(difluoromethyl)-2-nitro-5-(trifluoromethoxy)pyridine-4-acetate
2-(Difluoromethyl)-5-methoxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid
Methyl 4-(difluoromethyl)-5-methoxy-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-(difluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine-3-acetate