2-Amino-6-(difluoromethyl)-4-methylpyridine-3-sulfonamide
2-Methoxy-6-nitro-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride
3-Cyano-5-(difluoromethyl)-6-nitropyridine-2-acetonitrile
Methyl 4-chloro-2-methyl-3-(trifluoromethoxy)pyridine-6-carboxylate