221241-25-4
2,5-Dibromo-4-nitropyridine 1-oxide
→
~60%
221241-31-2
2,5-二溴-4-硝基吡啶
20734-22-9
2,5-dibromo-1-oxidopyridin-1-ium
871819-35-1
4,7-二溴-5-氮杂吲哚