Chemiluminescent acridinium compounds are used in homogeneous assays to
determine the concentration of an analyte in a sample without strong acid
or strong base treatment. The chemiluminescent acridinium compounds
include acridinium esters with electron donating functional groups at the
C2 and/or C7 position on the acridinium nucleus to inhibit pseudo-base
formation, or acridinium sulfonamides with or without electron donating
functional groups at the C2 and/or C7 position on the acridinium nucleus.