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Effect of Enhancers on the pyridopyridazine-peroxide-HRP Reaction

X Ji, K Kondo, Y Aramaki, L J Kricka

J Biolumin Chemilumin. Jan-Feb 1996;11(1):1-7.

PMID: 8686492

Abstract:

4-Substituted phenyl boronic acids (e.g., 4-iodo, 4-bromo, 4-phenyl) are effective enhancers of the horseradish peroxidase (Type VIA) catalysed chemiluminescent oxidation of various pyrido[3,4-d]pyridazine-1,4(2H,3H)dione derivatives. The most effective combination was 4-biphenylboronic acid and 8-amino-5-chloro-7-phenylpyrido[3,4-d]- pyridazine-1,4(2H,3H)dione. Generally, the intensity of light emission in the presence of peroxidase was higher with the pyridopyridazines than with sodium luminol. However, the blank light emission was much lower with sodium luminol than with the pyridopyridazines. A synergistic enhancement phenomenon was demonstrated for the combination of a 4-iodophenol and a 4-biphenylboronic acid enhancer with 8-amino-5-chloro-7-phenylpyrido[3,4-d]pyridazine-1,4(2H,3H) dione. The combination of these two enhancers produced a light emission intensity in an assay for 5 fmol of peroxidase that was 25% higher than expected from the sum of the individual light intensities.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP5122941 4-Biphenylboronic acid 4-Biphenylboronic acid 5122-94-1 Price
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