2-Chloro-3,6-diamino-5-(difluoromethyl)pyridine
5-Chloro-4-(difluoromethyl)pyridine-2-sulfonyl chloride
4-Chloro-3,6-diamino-2-(difluoromethyl)pyridine
3-Chloro-2-(difluoromethyl)pyridine-5-sulfonyl chloride
+86(0) 189-6910-6387
[email protected]