Enhanced luminescent assay
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United States of America Patent
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Jan 10, 1995
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N/A
app pub date -
Mar 23, 1989
filing date -
Sep 3, 1986
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Expired
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Abstract
In an assay in which a ligand is labelled by conjugation to a dihydrophthalazinedione (DPD), e.g. luminol or isoluminol, and the conjugated DPD is reacted with an oxidant, e.g. hydrogen peroxide, and an active heme group catalyst, e.g. microperoxidase, the light intensity is enhanced by certain sterically hindered amines defined as saturated bicyclic compounds having a nitrogen atom at one or both bridgehead positions or a piperidine ring compound having four C.sub.1-4 alkyl groups at the 2- and 6- positions. 1,4-Diazabicyclo[2.2.2]-octane, known as 'DABCO' is preferred.
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