6684-39-5
2-氯吡啶-5-磺酰氯
→
~96%
40741-46-6
6-氯-3-磺胺吡啶
6684-46-4
6-羟基吡啶-3-磺酰酸
5350-93-6
2-氯-5-氨基吡啶
876489-80-4
1-methyl-6-oxo-1,6-dihydro-pyridine-3-sulfonic acid