| 摘要 |
Useful for visualizing biological materials in a solid phase, on a gel, or in a liquid phase ls 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. |
