6-(Difluoromethyl)-3-fluoro-4-methoxypyridine-2-carboxylic acid
3-(Difluoromethyl)-5-fluoro-6-methylpyridine-2-carboxylic acid
2-(Difluoromethyl)-5-fluoro-3-methoxypyridine-4-carboxylic acid
5-(Aminomethyl)-2-(difluoromethyl)-3-fluoro-6-(trifluoromethyl)pyridine