Biotin hydrazide

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: An aldehyde was introduced into the monoclonal antibody 22-1-1 obtained in Example 1 by oxidation with sodium metaperiodate, which was bound with biotin hydrazide to obtain a biotinated antibody. Specifically, 1 ml of an ice-cooled metaperiodic acid solution was added to 1 ml of the ice-cooled monoclonal antibody 22-1-1, which was mixed well and subjected to an oxidation reaction in the dark place at 0° C. for 30 minutes. Thereafter, glycerol was added thereto to the final concentration of 15 mM, which was incubated at 0° C. for 5 minutes to stop the oxidation reaction. This solution was dialyzed against a 0.1M sodium acetate buffer (pH5.5) overnight, and biotin hydrazide was added to the final concentration of 5 mM to stir at room temperature for 2 hours. The unreacted molecules were removed from this by dialysis to obtain a biotin-labeled antibody. to obtain a biotinated antibody cooled monoclonal antibody 22-1-1, which was mixed well subjected to an oxidation reaction in the dark place at 0° C. for 30 minutes the oxidation reaction This solution was dialyzed against a 0.1M sodium acetate buffer (pH5.5) overnight, and biotin hydrazide was added to the final concentration of 5 mM The unreacted molecules were removed from this by dialysis