| abstract |
The present invention addresses the problem of providing a clearing agent which is capable of, after administering a fusant of a streptavidin mutant with a molecular probe, preventing the localization of the fusant at a target site such as a disease site and quickly removing (clearing) the fusant, which remains in the body, from the body. According to the present invention, provided is a compound represented by formula (1) or a salt thereof. [In formula (1): X1a, X1b, X2a and X2b independently represent O or NH; Y 1 and Y 2 independently represent C or S; Z 1 and Z 2 independently represent O, S or NH; V 1 and V 2 independently represent S or S + -O - ; n1 and n2 independently represent an integer of 0 or 1; L10 and L12 independently represent a divalent linking group; L11 represents a trivalent linking group; L14 represents a divalent linking group; and Sugar represents a sugar residue.] |