Ethyl 3-(chloromethyl)-5-(difluoromethyl)-2-methoxypyridine-4-acetate
Ethyl 3-(chloromethyl)-4-(difluoromethyl)-6-methoxypyridine-2-acetate
5-(Difluoromethyl)-2-methoxy-3-methylpyridine-4-sulfonyl chloride
4-(Difluoromethyl)-3-methoxy-6-methylpyridine-2-sulfonyl chloride