3-(Difluoromethyl)-2-nitro-5-(trifluoromethoxy)pyridine-4-carboxylic acid
 
2-Methyl-3-nitro-5-(trifluoromethoxy)pyridine-4-carbonyl chloride
 
Ethyl 3-methyl-6-nitro-2-(trifluoromethoxy)pyridine-4-acetate
 
2-(Difluoromethyl)-5-nitro-6-(trifluoromethoxy)pyridine-3-carboxylic acid