5-(Difluoromethyl)-4-methoxy-2-methylpyridine-3-carboxylic acid
3-(Bromomethyl)-4-(difluoromethyl)-6-methoxy-2-methylpyridine
5-(Difluoromethyl)-4-methoxy-3-nitropyridine-2-carboxylic acid
4-(Chloromethyl)-2-(difluoromethyl)-3-iodopyridine-6-carboxaldehyde