Methyl 4-chloro-2-(difluoromethyl)-6-nitropyridine-3-carboxylate
Methyl 3-chloro-5-(difluoromethyl)-2-nitropyridine-6-carboxylate
2-Cyano-6-(difluoromethyl)-3-hydroxypyridine-5-carboxaldehyde
2-Cyano-4-(difluoromethyl)-6-hydroxypyridine-3-carboxaldehyde