Ionic compounds containing the cationic meriquinone of a benzidine, kits containing the same, and the investigative use of the aforesaid
申请人:F. HOFFMANN-LA ROCHE AG
公开号:EP0219286A2
公开(公告)日:1987-04-22
Useful for visualizing biological materials in a solid phase, on a gel, or in a liquid phase is a solid salt of the meriquinone of benzidine or a substituted benzidine. An immobilized or dissolved complex of a polymeric anion and the meriquinone of benzidine or a substituted benzidine having controllable solubility may also be employed. Preferred are meriquinone salts and complexes of 3,3,5,5'-tetramethylbenzidine. For visualization, the benzidine or substituted benzidine is oxidized to its meriquinone at pH 3 to 7 in the presence of an effective anion or polymeric anion, an oxidation catalyst, and an effective amount of oxidant to form a solid salt or immobilized complex of the meriquinone under conditions where the meriquinone solubility lies below about 10⁻⁵ M.
联苯胺美利喹酮或取代联苯胺的固态盐可用于固相、凝胶或液相生物材料的可视化。也可使用具有可控溶解度的聚合物阴离子与联苯胺美利喹酮或取代联苯胺的固定或溶解复合物。首选的是3,3,5,5'-四甲基联苯胺的美利喹酮盐和络合物。为了实现可视化,在有效的阴离子或聚合阴离子、氧化催化剂和有效量的氧化剂存在下,联苯胺或取代联苯胺在 pH 值 3 至 7 的条件下被氧化为美利喹酮,从而在美利喹酮溶解度低于约 10-⁵ M 的条件下形成美利喹酮的固体盐或固定络合物。