3-Chloro-5-(difluoromethyl)-2-methoxypyridine-4-sulfonyl chloride
3-Bromo-2-nitro-5-(trifluoromethoxy)pyridine-4-acetic acid
Ethyl 3-amino-4-(difluoromethyl)-2-iodopyridine-6-carboxylate
4-Chloro-3-(difluoromethyl)-6-hydroxypyridine-2-carboxylic acid