3-(Difluoromethyl)-2,5-diiodopyridine-6-carbonyl chloride
3-(Chloromethyl)-4-methyl-2-(trifluoromethoxy)pyridine-5-acetic acid
4-Methoxy-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride
2-Bromo-6-hydroxy-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride