5-Cyano-2-(difluoromethyl)pyridine-4-sulfonamide
3-Cyano-5-(difluoromethyl)pyridine-4-sulfonamide
4-Chloro-3-(difluoromethyl)pyridine-5-sulfonamide
3-Chloro-2-(difluoromethyl)pyridine-5-sulfonamide
+86(0) 189-6910-6387
[email protected]