Table 1.

Single ion monitoring (SIM) windows.

Time window	Metabolite	Ions (m/z)
6.0–6.16	Pyruvate	173–178
6.16–9.00	Lactate	218–223
9.0–9.65	Proline	243–252
9.65–10	Succinate	246–252
10–12.06	Fumarate	244–250
12.06–12.40	Malate	334–340
12.40–13.57	Aspartate	333–339
13.57–14.90	Glutamate	347–354
14.90–15.29	U-13C Ribitol	323, 336–342
15.29–15.80	Glutamine	346–353
15.80–16.60	Citrate	464–474
16.60–37.50	Glucose	553–561

Time window, ions measured between these time limits; Metabolites, name of the compounds; Ions (m/z), mass-to-charge ratio measured.