4-Hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride
6-(Difluoromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-3-carboxylic acid
3-(Aminomethyl)-2-iodo-5-methoxy-6-(trifluoromethoxy)pyridine
2-Iodo-4-methoxy-5-methyl-3-(trifluoromethoxy)pyridine