3-(Difluoromethyl)-2-nitro-6-(trifluoromethyl)pyridine-4-sulfonyl chloride
6-Amino-3-(difluoromethyl)-2-fluoro-4-methylpyridine
3,4-Dibromo-2-(trifluoromethoxy)pyridine-6-carboxaldehyde
3-Amino-5-(difluoromethyl)-2-(trifluoromethyl)pyridine-6-acetic acid