Acridinium C2 NHS Ester can be used to label proteins and nucleic acids as the covalently bound acridinium NHS ester will chemiluminesce in the presence of hydrogen peroxide. Subsequently labeled proteins are useful for immunoassays.
Weeks, I., et al. Clin. chem., 29, 1474 (1983), Weeks, et al.: Methods Enzymol., 133, 366 (1986)