The present invention is a compound having a structure represented by the following formula (1): and an antibody to BSH obtained by using the compound as a hapten and using a complex of the hapten and a high-molecular compound as an antigen.
By using the present invention, it becomes possible to provide a hapten compound for preparing an antibody recognizing BSH highly sensitively and highly selectively, an antibody to BSH, as well as a kit for measuring BSH and an immunological measuring method having high sensitivity and excellent in quantitative property using the antibody.
1. A hybridoma producing a monoclonal antibody, wherein the hybridoma is BSF-2 (accession number FERM BP-10689).
2. A monoclonal antibody produced by the hybridoma BSF-2 (accession number FERM BP-I0689).
3. A monoclonal antibody to mercaptoundecahydrododecaborate (BSH), wherein the heavy chain of the antibody has at least 90% homology to SEQ ID NO:3 and the light chain of the antibody has at least 90% homology to SEQ ID NO:4.
4. A kit for measuring mercaptoundecahydrodecaborate (BSH), comprising a monoclonal antibody as defined in claim 3.