6-(Chloromethyl)-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
5-(Chloromethyl)-2-(difluoromethyl)-3-iodopyridine
2-(Chloromethyl)-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-5-sulfonyl chloride
4,5-Diamino-2-(difluoromethyl)pyridine