3,3',4,4'-tetramethoxy-[2,2'-bipyridine] 1-oxide

3-氨基-4-甲氧基吡啶

2-Bromo-3-fluoro-4-methoxypyridine

3-氨基-2-溴-4-甲氧基吡啶

3,3'-Difluor-4,4'-dimethoxy-2,2'-bipyridin