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1 November 2006 Superoxidation of Retinoic Acid
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Abstract

Atmospheric pressure chemical ionization mass spectroscopy (APCI-MS) was used to examine the light-induced oxidation products of retinoic acid under conditions that favor and preclude its aggregation. We observed that in conditions that favor aggregation, i.e. in aqueous solutions, retinoic acid undergoes superoxidation to yield highly oxidized species. Oxidation is limited, however, in the absence of such communication, i.e. when the polyene is fully solvated. From a comparison of the measured MS with that obtained from chemical oxidation of retinoic acid under conditions that promote radical oxidation and singlet oxygen–mediated oxidation, we conclude that superoxidation is mediated by reactive oxygen species other than singlet oxygen.

Ilyas Washington, Nicholas J. Turro, and Koji Nakanishi "Superoxidation of Retinoic Acid," Photochemistry and Photobiology 82(6), 1394-1397, (1 November 2006). https://doi.org/10.1562/2006-02-28-RA-828
Received: 28 February 2006; Accepted: 1 April 2006; Published: 1 November 2006
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