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. 2016 Dec 23;6:39207. doi: 10.1038/srep39207

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(A,B) The HPLC profile of the reaction of TCBQ (0.2 mM) with NHPI (0.4 mM) in phosphate buffer (pH 7.4, 0.1 M). (C) The ESI-Q-TOF-MS-MS spectrum of NHPI. (D) The ESI-Q-TOF-MS-MS spectrum of the reaction product I with a retention time of 7.5 min in HPLC. (E) The ESI-Q-TOF-MS spectrum of reaction product II with a retention time of 8.5 min characterized with 2-chlorine isotope clusters at m/z 326. (F) The ESI-Q-TOF-MS spectrum of reaction intermediate with a retention time of 10.6 min with 2 chlorine isotope clusters at m/z 352.