5-(Chloromethyl)-2-(difluoromethyl)-3-hydroxypyridine-4-carboxylic acid
5-(Difluoromethyl)-2-iodo-3-nitropyridine-6-acetonitrile
6-(Chloromethyl)-2-(difluoromethyl)-4-hydroxypyridine-3-carboxylic acid
4-(Difluoromethyl)-2-iodo-3-nitropyridine-6-acetonitrile