2-(Chloromethyl)-6-(difluoromethyl)-3-methylpyridine-5-carboxylic acid
2-(Chloromethyl)-6-(difluoromethyl)-3-methylpyridine-4-carboxylic acid
2-(Chloromethyl)-5-(difluoromethyl)-6-methylpyridine-3-carboxylic acid
6-(Chloromethyl)-3-(difluoromethyl)-2-methylpyridine-4-carboxylic acid