4FIK:
reference: Synchrotron Radiation Provides a Plausible Explanation for the Generation of a Free Radical Adduct of Thioxolone in Mutant Carbonic Anhydrase II., Sippel KH, Genis C, Govindasamy L, Agbandje-McKenna M, Kiddle JJ, Tripp BC, McKenna R, J Phys Chem Lett. 2010 Oct 7;1(19):2898-2902. PMID: 20976122

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