Metabolite Profile Changes in Different Regions of Rat Brain Affected by Ephedra sinica

Table 1

Potential biomarkers identified in the positive mode.

Number	Retention time (min)	Biomarker	Molecular formula	Parent ion (m/z)	Fragment ion (m/z)	Error (ppm)
1	3.97	N-Carbamoylsarcosine	C4H8N2O3	133.0612[M+H]^+	114.0471, 90.0358	3
2	3.62	Hydroxylysine	C6H14N2O3	163.1078[M+H]^+	144.9638	1
3	2.56	Serinyl-valine	C8H16N2O4	205.1182[M+H]^+	118.0668, 60.0360	−0.5
4	0.70	Trap-Val-Arg	C22H33N7O4	460.2637[M+H]^+	415.2028	−3
5	5.46	GPC	C8H20NO6P	258.1102[M+H]^+	221.0004	0.4
6	1.00	LysoPC (16 : 0)	C24H50NO7P	496.3358[M+H]^+	184.0544	−8
7	1.53	Neuraminic acid	C9H17NO8	268.1035[M+H]^+	136.0425	3