Table.

Identification of analytes by GCMS.

RT (min)	Peak identity	TMS	MOX
12.11	Valeric acid (pentanoic acid)	1	0
14.87	Lactic acid	2	0
15.18	Caproic acid (hexanoic acid)	1	0
15.35	Glycolic acid (2-hydroxyethanoic acid)	2	0
16.33	Alanine	2	0
18.12	Benzyl alcohol	1	0
18.33	β-Hydroxybutyric acid (3-hydroxybutanoic acid)	2	0
20.36	Valine	2	0
20.97	Urea	2	0
21.37	Benzoic acid	1	0
21.12	Ethanolamine (2-aminoethanol)	3	0
22.40	Leucine	2	0
22.43	Inorganic phosphate	3	0
23.06	Isoleucine	2	0
23.50	Glycine	3	0
26.27	Threonine	3	0
26.99	Homocysteine	3	0
29.12	4-Chlorophenylacetic acid (internal standard)	1	0
30.69	Malonic acid (enol)	3	0
30.89	Creatinine (enol)	3	0
31.82	Erythronic acid	4	0
33.24	Xylopyranose (xylose ring –opened)	4	0
33.35	Arabinofuranose (arabinose 5-membered ring)	4	0
33.48	Arabinose (ring-opened)	4	0
34.05	Arabinopyranose (arabinose 6-membered ring)	4	0
34.38	Ribose	4	0
36.50	Xylitol	5	0
39.87	2-Deoxygalactopyranose (2-deoxygalactose)	4	0
40.63	Fructose	5	1
40.99	Mannitol	6	0
41.37	Glucose (ring-opened)	5	1
41.79	Glucose (ring-opened)	5	1
42.29	Gluconic acid	6	0
43.02	Galactonic acid	6	0
43.15	Glucopyranose (glucose 6-membered ring)	5	0
43.73	Ribitol	5	0
44.06	Palmitic acid (hexadecanoic acid)	1	0
45.88	myo-Inositol	6	0
51.81	1-Myristoylglycerol	2	0
54.89	2-Palmitoylglycerol	2	0
55.54	1-Palmitoylglycerol	2	0
58.77	2-Stearoylglycerol	2	0
59.51	1-Stearoylglycerol	2	0
62.99	1-Eicosanoylglycerol	2	0

RT = retention time; TMS = number of trimethylsilyl groups; MOX = number of methoxamine groups.