4-(Chloromethyl)-2-methoxy-5-nitro-3-(trifluoromethoxy)pyridine
6-(Fluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-3-acetic acid
5-(Chloromethyl)-3-methoxy-2-nitro-4-(trifluoromethoxy)pyridine
2-(Fluoromethyl)-6-methoxy-3-(trifluoromethoxy)pyridine-4-acetic acid