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. 2023 May 10;187:106464. doi: 10.1016/j.ejps.2023.106464

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© 2023 The Authors. Published by Elsevier B.V.

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Fig 2: — Typical chromatogram of PC solution and its degradation products (A) in a freshly made solution, (B) after 3 h of HCl 0.1 M exposure, (C) after 1 hour of NaOH 0.1 M exposure and (D) after 96 h at 80 °C. The PC is quantified at m/z = 286.2, Rt = 1.40 min (red chromatogram). The 3-dPC and 17-dPC are quantified at m/z = 265.2, Rt = 1.35 and 1.45 respectively (green chromatogram). Finally, the 3,17-ddPC is quantified at m/z = 244.2, Rt = 1.15 mn (blue chromatogram).

Fig 2: — Typical chromatogram of PC solution and its degradation products (A) in a freshly made solution, (B) after 3 h of HCl 0.1 M exposure, (C) after 1 hour of NaOH 0.1 M exposure and (D) after 96 h at 80 °C. The PC is quantified at m/z = 286.2, Rt = 1.40 min (red chromatogram). The 3-dPC and 17-dPC are quantified at m/z = 265.2, Rt = 1.35 and 1.45 respectively (green chromatogram). Finally, the 3,17-ddPC is quantified at m/z = 244.2, Rt = 1.15 mn (blue chromatogram).