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  • Title: Biochemical activation of AZQ [3,6-diaziridinyl-2,5-bis(carboethoxyamino)-1,4-benzoquinone] to its free radical species.
    Author: Gutierrez PL, Friedman RD, Bachur NR.
    Journal: Cancer Treat Rep; 1982 Feb; 66(2):339-42. PubMed ID: 6275990.
    Abstract:
    The aziridinyl quinone 3,6-diaziridinyl-2,5-bis(carboethoxyamino)-1,4-benzoquinone is an antitumor agent that enhances electron flow from reduced nicotinamide adenine dinucleotide phosphate (NADPH) to molecular oxygen in rat liver microsomes, rat liver nuclei, and purified NADPH-cytochrome c reductase. The process is enzymatic and has an optimum pH of 7.5; NADPH is the preferred cofactor. Electron spin resonance studies show the presence of a free radical semiquinone characterized by five hyperfine lines at g = 2.0046.
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