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Table 2 MS/MS-based phospholipid identification increased in breast cancer (600–850 m/z)

From: Rapid evaporative ionisation mass spectrometry of electrosurgical vapours for the identification of breast pathology: towards an intelligent knife for breast cancer surgery

m/z Lipid identification Ion
671.47 PA (16:0/18:2) [M-H]-
  PA (16:1/18:1) [M-H]-
  PE (16:1/16:0) [M-NH3-H]-
673.48 PA (16:0/18:1) [M-H]-
  PA (18:0/16:1) [M-H]-
  PE (16:0/16:0) [M-NH3-H]-
687.5 PA (P-20:0/16:0) [M-H]-
  PA (O-18:0/18:1) [M-H]-
699.5 PE (16:0/18:1) [M-NH3-H]-
  PA (18:1/18:1) [M-H]-
  PA (18:0/18:2) [M-H]-
713.51 PA (P-20:0/18:1) [M-H]-
  PA (O-20:0/18:2) [M-H]-
  PG (P-16:0/18:1) [M-H2O-H]-
714.51 PE (16:0/18:2) [M-H]-
  PE (16:1/18:1) [M-H]-
  PE (16:2/18:0) [M-H]-
716.52 PE (18:0/16:1) [M-H]-
  PE (16:0/18:1) [M-H]-
717.51 PA (O-16:0/20:4) [M + Cl]-
  PC (16:0/16:0) [M-CH3-H]-
735.47 PA (P-20:0/20:4) [M-H]-
  PA (P-20:1/20:3) [M-H]-
  PG (O-18:0/16:0) [M-H]-
  PA (18:0/18:2) [M + Cl]-
  PA (18:1/18:1) [M + Cl]-
  PA (P-18:0/22:4) [M-H]-
742.54 PE (18:0/18:2) [M-H]-
  PE (18:1/18:1) [M-H]-
  PC (16:1/18:1) [M-CH3-H]-
  PC (16:0/18:2) [M-CH3-H]-
744.55 PC (16:0/18:1) [M-CH3-H]-
  PC (18:0/16:1) [M-CH3-H]-
  PE (18:0/18:1) [M-H]-
747.51 PA (18:1/22:5) [M-H]-
  PA (18:2/22:4) [M-H]-
  PE (18:1/20:4) [M-NH3-H]-
  PE (16:0/22:5) [M-NH3-H]-
  PE (18:0/20:5) [M-NH3-H]-
766.54 PS (P-16:0/20:4) [M-H]-
  PE (18:0/20:4) [M-H]-
  PC (16:0/20:4) [M-CH3-H]-
768.55 PC (18:1/18:2) [M-CH3-H]-
  PC (16:0/20:3) [M-CH3-H]-
  PE (20:2/18:1) [M-H]-
  PE (18:0/20:3) [M-H]-
770.57 PE (18:0/20:2) [M-H]-
  PC (18:1/18:1) [M-CH3-H]-
  PC (18:0/18:2) [M-CH3-H]-
772.58 PE (18:0/20:1) [M-H]-
  PC (18:0/18:1) [M-CH3-H]-
  PS (O-18:0/18:2) [M-H]-
  PE (P-18:1/22:6) [M-H]-
792.55 PC (16:0/18:2) [M + Cl]-
  PC (18:2/20:3) [M-CH3-H]-
  PC (18:0/20:5) [M-CH3-H]-
  PC (18:1/20:4) [M-CH3-H]-
  PE (18:1/22:4) [M-H]-
  PE (18:0/22:5) [M-H]-
794.57 PC (16:0/22:4) [M-CH3-H]-
  PC (18:1/20:3) [M-CH3-H]-
  PC (18:0/20:4) [M-CH3-H]-
  PC (16:0/18:1) [M + Cl]-
  1. Possible lipid identifications from tandem mass spectrometry (MS/MS) data for each significant m/z peak in negative mode. Numbers within brackets represent the number of carbons in the fatty acid chain, followed by the number of double bonds (C:N). PA phosphatidic acid, PE phosphatidylethanolamine, PC phosphatidylcholine, PS phosphatidylserine