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