6-Bromo-4-nitro-2-(trifluoromethoxy)pyridine-3-sulfonamide
2-Bromo-4-nitro-5-(trifluoromethoxy)pyridine-3-sulfonamide
2-Bromo-3-nitro-6-(trifluoromethoxy)pyridine-5-sulfonamide
4-Bromo-6-nitro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
+86(0) 189-6910-6387
[email protected]