4-(Difluoromethyl)-3-methoxy-2-methyl-5-(trifluoromethoxy)pyridine
5-(Fluoromethyl)-3-methoxy-2-methyl-4-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-6-methoxy-3-methyl-2-(trifluoromethoxy)pyridine
3-(Fluoromethyl)-5-methoxy-4-methyl-2-(trifluoromethoxy)pyridine