4,4'-Diamino-2,2'-bipyridyl
https://www.finechem.org/shop/fm-3b-d2892-44-diamino-22-bipyridyl-83354
https://www.finechem.org/web/image/product.template/83354/image_1920?unique=ad412cb
4,4'-Diamino-2,2'-bipyridyl 1g : Bipyridyl diamine for specialty polymers, coordination complexes, and resins.
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