Phenolic Compounds from Polygonum chinense Induce Growth Inhibition and Apoptosis of Cervical Cancer SiHa Cells

Table 1

UHPLC-QTOF-MSMS identified in the typical base peak chromatogram (BPC) of PC_Water samples.

Peak no.	Retention (min)	Molecular formula	Measured mass m/z (error, ppm)	MS/MS fragments ions	Identification
1	2.823	C14H12O11	355.0311 (-0.61)	193.0139, 163.0401, 179.0721	Chebulagic acid [25]
2	3.841	C7H12O6	191.0561 (-1.51)	123.1132, 138.2661, 162.1097	Citrate acid [26]
3	8.461	C7H6O5	169.0144 (-0.91)	125.0252, 117.0357, 103.0188	Gallic acid [25]
4	11.499	C16H18O9	353.0875 (0.87)	191.0572, 135.0458, 155.0352	Chlorogenic acid [27]
5	11.896	C13H8O8	291.0150 (-1.23)	247.0265, 191.0361, 219.0310	Brevifolin carboxylic acid [28]
6	13.045	C27H22O18	633.0742 (-1.42)	481.0373, 301.9995, 169.0251	Corilagin [29]
7	16.314	C21H20O12	463.0888 (1.20)	301.0533, 179.0153, 125.0256	Quercetin-3-O-galactoside [25]
8	18.014	C14H6O8	301.0002 (-4.02)	145.0308, 117.0357, 173.0249	Ellagic acid [25]
9	18.375	C15H12O8	319.0475 (-1.9)	217.1129, 245.0381, 213.0478	Dihydromyricelin [30]
10	20.255	C21H20O11	447.0931 (0.41)	301.0060, 179.0000, 121.0306	Quercitrin [31]
11	26.613	C22H18O13	489.0674 (0.1)	299.3215, 271.0915, 125.0032	Enyssoside [32]
12	27.540	C16H10O8	329.0306 (-0.9)	298.1564, 270.1088, 314.0599	3,3-Dimethyl ellagic acid [25]

Error (ppm): the difference between experimental mass and theoretical mass of the compound; indicated compound 8 undetected in PC sample; the compounds 1, 2, 3, 4, 5, 6, 8, and 10 were confirmed by chemical reference standards.