4-Amino-3-nitro-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
3-Amino-2-nitro-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
4-Amino-6-nitro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
3-Amino-2-nitro-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine