N-(2-bromo-5-chloropyridin-3-yl)-2-chloroacetamide

2-chloro-N-(2,5-dichloro-pyridin-3-yl)-acetamide

2-溴-3-氨基-5-氯吡啶

2-氨基-5-氯吡啶

2-溴-5-氯-3-硝基吡啶