4-(Chloromethyl)-6-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-sulfonyl chloride
6-(Difluoromethyl)-3-iodo-2-(trifluoromethoxy)pyridine
3-Amino-4-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylic acid
4-(Fluoromethyl)-6-methoxy-3-(trifluoromethoxy)pyridine-2-acetic acid