The differentially expressed metabolites in AP rats using a non-targeted serum metabolomics strategy.

No.	R t	m/z		Proposed compound	Formula	Ion form	Trend
1	2.63	153.07	HMDB01851	l-Arabitol	C5H12O5	M + H	↑
2	0.55	191.01	HMDB00094	Citric acid	C6H8O7	M − H	↑
3	0.66	215.01	HMDB00193	Isocitric acid	C6H8O7	M + H	↓
4	0.92	164.07	HMDB00159	l-Phenylalanine	C9H11NO2	M − H	↑
5	0.24	182.08	HMDB00158	l-Tyrosine	C9H11NO3	M + H	↑
6	8.3	89.02	HMDB01882	Dihydroxyacetone	C3H6O3	M − H	↑
7	0.55	116.07	HMDB00883	l-Valine	C5H11NO2	M − H	↑
8	0.71	117.01	HMDB00254	Succinic acid	C4H6O4	M − H	↑
9	1.98	127.03	HMDB00357	3-Hydroxybutyric acid	C4H8O3	M + H	↑
10	0.69	169.04	HMDB00289	Uric acid	C5H4N4O3	M + H	↑
11	1.89	118.05	HMDB00532	Acetylglycine	C4H7NO3	M + H	↓
12	8.52	256.26	HMDB12273	Palmitic amide	C16H33NO	M + H	↑
13	2.46	136.04	HMDB00742	Homocysteine	C4H9NO2S	M + H	↓
14	3.03	145.06	HMDB03423	d-Glutamine	C5H10N2O3	M − H	↓
15	0.60	175.12	HMDB00517	l-Arginine	C6H14N4O2	M + H	↑
16	7.90	327.23	HMDB01043	Arachidonic acid	C20H32O2	M + H	↑
17	1.09	217.09	HMDB01238	N-Acetylserotonin	C12H14N2O2	M − H	↓
18	5.91	271.22	HMDB10734	(R)-3-Hydroxy-hexadecanoic acid	C16H32O3	M − H	↑
19	1.00	181.07	HMDB00169	d-Mannose	C6H12O6	M + H	↑