4-(Difluoromethyl)-3-fluoro-5-hydroxypyridine-2-carboxaldehyde
2-Cyano-5-(difluoromethyl)-3-(trifluoromethyl)pyridine-4-acetic acid
6-(Bromomethyl)-2-cyano-4-(difluoromethyl)pyridine-3-acetic acid
Methyl 4-(difluoromethyl)-3-fluoro-2-hydroxypyridine-6-carboxylate