Ethyl 4,6-dimethyl-2-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 6-(difluoromethyl)-4-iodo-3-methylpyridine-2-carboxylate
5-(Difluoromethyl)-2-(trifluoromethyl)pyridine-3-carboxylic acid
3-(Difluoromethyl)-2-methoxy-6-nitropyridine-5-sulfonyl chloride