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. 2015 Mar 14;15:17. doi: 10.1186/s12896-015-0133-0

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© Ding et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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HPLC-MS chromatograms of the transformation product. (A) HPLC analysis of the product; (B) ESI-MS (-) MS spectrum of the retention time at 5.586 min; (C) ESI-MS (-) MS spectrum of the retention time at 6.387 min.