5-bromo-2,2'-dichloro-[4,4']bipyridinyl

(P)-5,5'-dibromo-2,2'-dichloro-3-iodo-4,4'-bipyridinyl

5-bromo-2,2'-dichloro-5'-iodo-4,4'-bipyridine

2,2'-dichloro-5-iodo-4,4'-bipyridine

2,2 '-二氯-4,4 '-二吡啶