Skip to main content

Table 4 Characteristics of 1H-NMR signals observed in Qinjiao extract

From: Integrated quality evaluation strategy for multi-species resourced herb medicine of Qinjiao by metabolomics analysis and genetic comparation

CompoundGroupChemical shift δ (ppm)
Gentiopicroside3-H(d)7.47
8-H(m)5.76
1-H(d)5.66
6-H(m)5.63
10-CH2(dt)5.22
7=CH(m)5.00–5.10
1-glc-1′(d) –CH (anomeric)4.67
Loganic acid3-H(d)7.38
1-H(d)5.28
5-H(m)2.24
9-H(m)1.98
8-H(d)1.10
1-glc-1′(d) –CH (anomeric)4.66
Swertiamarin3-H(s)7.65
9-H(d)2.93
Sweroside3-H(d)7.60
Sucrose–CH (anomeric)(d)5.40
  1. a Letters in parentheses indicate the peak multiplicity property of proton NMR signal
  2. s singlet, d doublet, dd double doublet, dt double triplet, t triplet, m multiplet, br broad