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Reversed phase chromatograms of a standard mixture containing 1 μmol/L SA, ABA and JA in 20% aq. methanol (injection volume of 1 μL) acquired in water-acetonitrile eluent system containing 0.1% formic acid (A), 0.3 mmol/L ammonium acetate (B) or 0.3 mmol/L ammonium formate (C). The reversed phase chromatograms were recorded by a QqLIT mass spectrometer operating in negative MS/MS (MRM) mode.
