5-***-2-氯***53939-30-3英文名5-Bromo-2-chloropyridine别名2-Chloro-5-bromopyridine产品名称5-***-2-氯***;2-氯-5-******分子式C5H3BrClN分子量192.44CAS登录号53939-30-3熔点67-71ºC)