. 2017 Dec 8;12:34. doi: 10.1186/s13020-017-0155-8

Table 2.

Chemical markers in RPM samples from different geographical origins by UPLC-QTOF/MS

No.	t (min)	m/z (−)	Fragment information	Compound name	Compound type	Formula	Max fold change	VIP value
C1	0.79	191.0197	191.0197, 173.0091	Citric acid	Organic acids	C₆H₈O₇	4.72	4.11
C2	2.86	881.1917	881.1917, 863.1829, 591.1144, 217.0506, 152.0015	3,3′-di-O-Galloyl-procyanidin B2	Polyphenols	C₄₄H₃₄O₂₀	8.12	5.12
C3	5.68	405.2810	405.2810, 243.1911, 227.0425, 215.0702, 201.0545, 173.0596	2,3,5,4′-Tetrahydroxystilbene-2-O-glucoside	Stilbene glycosides	C₂₀H₂₂O₉	2.01	6.15
C4	8.06	431.0981	431.0981, 269.0455, 265.0506, 263.0350, 253.0506, 241.0506, 227.0350, 224.0478, 210.0322, 182.0373	Emodin-8-O-glucoside	Anthraquinone glycosides	C₂₁H₂₀O₁₀	31.99	5.20
C5	8.53	407.1347	407.1347, 245.0819, 230.0948, 202.0635, 159.0451	Torachrysone-8-O-glucoside	Anthraquinone glycosides	C₂₀H₂₄O₉	7.78	4.28
C6	8.65	473.1085	473.1085, 456.1062, 431.0983, 269.0455, 265.0506, 253.0506, 240.0428, 227.0350, 224.0478, 210.0322, 182.0373	Emodin-O-(acetyl)-hexoside	Anthraquinone derivatives	C₂₃H₂₂O₁₁	4.42	7.54
C7	9.30	487.0638	487.0638, 470.0734, 445.0369, 283.0604, 240.0428, 212.0478, 197.0244, 184.0505, 169.0278	Physcion-O-(acetyl)-hexoside	Anthraquinone derivatives	C₂₃H₂₂O₁₂	4.73	3.80
C8	10.18	285.0398	285.0398, 269.0455, 253.0506, 240.0428, 227.0350, 224.0478, 210.0322, 182.0373	Citreorosein	Anthraquinones	C₁₅H₁₀O₆	34.91	4.25
C9	12.50	283.0604	283.0604, 240.0428, 212.0478, 197.0244, 184.0505, 169.0278	Physcion	Anthraquinones	C₁₆H₁₂O₅	2567.78	6.46