DON was obtained from Romer Labs (Tulln, Austria) and CER was purified as previously described [28 (link)]. Cell culture media and supplements were obtained from Gibco® Life Technologies (Karlsruhe, Germany). KH2PO4, KCl, NaCl, Na2HPO4, D-glucose, HEPES, CaCl2, MgCl2, glycin, formaldehyde, sodium dodecyl sulfate (SDS), NaOH and Triton X-100 were purchased from Carl Roth (Karlsruhe, Germany) and Lucifer Yellow CH di-lithium salt from Santa Cruz Technologies (Dallas, TX, USA). For LC-MS/MS measurements, MS grade water was purchased from VWR (Fontenay-sous-Bois, France), acetonitrile (ACN) and methanol (MeOH) from Honeywell (Seelze, Germany). Acetic acid was obtained from Merck (Darmstadt, Germany) and ammonium acetate (both LC-MS grade) from Sigma Aldrich (Vienna, Austria). DON-3-sulfate, DON-15-sulfate and DON-3-glucuronide were kindly provided by Dr. Philipp Fruhmann (Technical University of Vienna) and synthesized as previously described [44 (link)].
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