6,6'-Dihydroxy-4,4,4',4',7,7'-hexamethyl-2,2'-spirobichroman
https://www.finechem.org/shop/fm-3b-d2286-66-dihydroxy-444-4-77-hexamethyl-22-spirobichroman-83251
https://www.finechem.org/web/image/product.template/83251/image_1920?unique=ad412cb
6,6'-Dihydroxy-4,4,4',4',7,7'-hexamethyl-2,2'-spirobichroman 25g : Aromatic spiro compound used in specialty polymer synthesis and advanced materials.
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