5-溴-2-氯-3-硝基吡啶

2-amino-5-bromo-N,N-dimethyl-3-pyridinesulfonamide

联硼酸频那醇酯

2-氨基-5-溴-3-硝基吡啶

5-溴-2-羟基-3-硝基吡啶