Protected chemiluminescent labels

Details Protected chemiluminescent labels Protected chemiluminescent labels

C - Chemistry, Metallurgy

07

D

167/43, 260/281.

C07D 215/48 (2006.01) C07D 219/04 (2006.01) G01N 33/532 (2006.01) G01N 33/533 (2006.01) G01N 33/58 (2006.01)

Patent

CA 1333396

A method of preparing a labelled specific binding partner, such as a biological probe in the form of an antibody or oligonucleotide probe, using a protected label the corresponding unprotected label being susceptible to inactivation, such as by hydrolysis to yield a non-chemiluminescent form of the label. The specific binding partner is linked to the label, and an adduct of the label is prepared using a protective adduct former which produces a protected label which is less susceptible to inactivation. Particularly preferred labels are the acridiniums and acridans, most preferably the former having the general structure: Image wherein the phenyl rings are optionally additionally substituted, R1 is preferably an alkyl, and R5 is an optionally substituted hydrocarbon, most preferably a phenyl moiety which is either linked to the specific binding partner, or capable of being linked thereto. Formation of the protected label is preferably an equilibrium reaction which is readily reversible, such as by dilution or oxidation of the protective adduct former. Labels useful in such a method are also disclosed.

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