Qualitative and Quantitative Analysis of Volatile Components of Zhengtian Pills Using Gas Chromatography Mass Spectrometry and Ultra-High Performance Liquid Chromatography

Table 2

The relative content of components of ZTPs identified by GC-MS.

Peak number	Retention time (min)	Compound name	Molecular formula		Relative content (%)
					Ethyl acetate refluxing	Ethyl acetate ultrasonic	Ether ultrasonic	Petroleum ether ultrasonic
1	2.808	3,5-Dimethoxytoluene	C9H12O2	152.19	0.637	1.718	1.372	1.703
2	4.312	Safrole	C10H10O2	162.19	1.555	—	—	—
3	10.059	2-Methoxy-4-vinylphenol phenol	C9H10O2	150.17	1.691	1.373	0.861	—
4	12.241	1,2-Dimethoxy-4-(2-propenyl)benzene	C12H18O3	210.27	3.833	2.839	3.238	0.768
5	12.442	3,4,5-Trimethoxytoluene	C10H14O3	182.22	0.755	0.571	0.689	—
6	14.901	Pentadecane	C15H32	212.41	1.319	1.269	—	0.795
7	15.384	2,6-Di-tert-butyl-4-methylphenol	C15H24O	220.35	—	—	2.667	—
8	20.422	Butylidene phthalide	C12H12O2	188.22	5.055	4.871	4.086	3.426
9	22.455	Ligustilide	C12H14O2	190.24	19.381	16.109	17.654	15.063
10	24.366	trans-Ligustilide	C12H14O2	190.24	1.007	1.566	1.06	0.79
11	26.502	1,2-Benzenedicarboxylic acid, bis(2-methylpropyl) ester	C16H22O4	278.34	2.724	0.719	—	1.881
12	28.946	Dibutyl phthalate	C16H22O4	278.34	5.891	3.172	5.891	5.193
13	30.251	Sulfur	S8	32.06	—	—	—	3.993
14	33.188	(Z,Z)-9,12-Octadecadienoic acid	C18H32O2	280.44	9.346	10.605	11.484	5.865
15	33.327	Oleic acid	C18H34O2	282.46	10.012	12.334	12.347	16.905
16	33.892	(Z,Z)-9,12-Octadecadienoic acid ethyl ester	C20H36O2	383.5	1.181	0.71	1.936	1.268
17	38.18	Tricosane	C23H48	324.63	0.706	0.678	0.789	0.888
18	44.619	(S)-8,8-Dimethyl-2-oxo-7,8-dihydro-2H,6H-pyrano(3,2-g)chromen-7-yl 3-methylbut-2-enoate	C19H20O5	328.36	1.464	1.209	2.318	1.962
19	45.03	8,8-Dimethyl-2H,8H-benzo[1,2-:5,4-]dipyran-2-one	C14H12O3	228.24	3.813	4.629	4.166	7.711
20	46.766	Eicosane	C20H42	282.55	2.005	2.39	2.946	2.839
21	49.893	n-Docosane	C22H46	310.6	3.545	3.94	4.272	5.138
22	53.837	Asarinin	C20H18O6	354.35	2.085	1.9	1.671	2.01