3-Amino-5-(difluoromethyl)-4-methylpyridine-2-sulfonamide
Methyl 3-(bromomethyl)-5-(difluoromethyl)-4-methoxypyridine-2-carboxylate
2-Cyano-4-nitro-3-(trifluoromethoxy)pyridine-5-acetic acid
4-Bromo-3-(difluoromethyl)-5-hydroxypyridine-2-sulfonyl chloride