Fig. 1From: LC-MS based sphingolipidomic study on A549 human lung adenocarcinoma cell line and its taxol-resistant strainDifferentiation of isobaric SPLs by high resolution mass spectrometry. Accurate mass and isotope distribution can distinguish two m/z 316 compounds, corresponding to d19:0 sphinganine (C19H41NO2) and t18:1 phytosphingosine (C18H37NO3), respectively. Typical ion fragments in MS/MS confirmed the identificationBack to article page