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. 2011 Jan 14;16(1):552–566. doi: 10.3390/molecules16010552

Figure 2.

Figure 2

Inspection of mass spectra obtained from XIC m/z 217-218 (calcd. [M-H]- = 217.1) and 219-220 (calcd. [M+H]+ = 219.1) for 19 during the hydrolysis of 1 (at t = 2 d) in the presence HLE at pH 7.5 and 37 °C. Chromatographic conditions: A mixture of water and MeCN containing 0.1% formic acid (linear gradient from 2% up to 60.0% MeCN in 35 min).