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Name: 4-Ethynyl-2,2'-bipyridine
Other name: 2,2'-Bipyridine, 4-ethynyl- ;
4-Ethinyl-2,2'-bipyridin;
4-ethynyl-2-pyridin-2-ylpyridine;

Name: 4'-Chloro-2,2':6',2''-terpyridine
Other name: 2,2':6',2''-Terpyridine, 4'-chloro-;
4-chloro-2,6-dipyridin-2-ylpyridine;
4'-Chlor-2,2':6',2''-terpyridin;
4-chloro-2,6-di(2-pyridyl)pyridine;