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Table 1 Constituents identified from INAE

From: Beneficial effect of Indigo Naturalis on acute lung injury induced by influenza A virus

Peak no Name (possible chemical) Categories Formula MS1 MS2
1 Adenine Nucleosides C5H5N5 136.13 119.00
2 2-Methyquinazlin-4(3H)-One Alkaloids C9H8N2O 161.14 140.84,133.20
3 Imidazolinones Alkaloids C8H7N3O 162.15 145.00
4 3-(2′-Hydroxyphenyl)-2-Methyl-4(3H)-Quinazolinone Alkaloids C15H12N2O2 253.16 134.09,120.06
5 Isaindigotone2 Alkaloids C20H18N2O4 351.28 333.21,315.21
6 Adenosine Nucleosides C10H13N5O4 268.17 136.06
7 Annuionone D Terpene C13H20O3 225.18 156.28
8 6-Hydroxy-4-(5-Hydroxymethylfuran-2-yl)-Quinolin-2(1H)-One Alkaloids C16H19NO2 258.19 240.16
9 Valine Amino acids C15H11NO2 118.16 101.12,98.14
10 Hydroxylindirubin Alkaloids C16H10N2O3 279.31 261.25,223.18
11 Isaindigodione Alkaloids C18H18N2O4 349.38 331.28
12 Mediroresinol Alkaloids C21H24O7 349.35 371.25
13 2-(3-Hydroxy)-4-Methoxy-2-Oxindolin-3-yl)-Acetamide Alkaloids C11H13N2O4 237.21 118.08
14 Ganine Nucleosides C5H5N5O 174.17 157.13
15 Quinazolinones Alkaloids 316.22 298.19,288.48
16 Imidazolinones Alkaloids 354.31 337.18,175.11
17 2-Hydroxy-1,4-Phthalate Organic Acids C8H6O5 183.16 163.06,139.12
18 Quinazolinones Alkaloids 353.22 319.25,335.22
19 Ethyl-3,4-Dihydro-4-Oxoquinazoline-2-Carboxylate Alkaloids C11H10N2O3 460.33 437.28,415.26
  1. The phytochemical constituents in aqueous extract of Indigo Naturalis (INAE) were identified through UPLC-Q-TOF–MS and UPLC-LTQ-ESI–MS readouts including the retention time, MS/MS fragments, molecular form with referred to the databases SciFinder, PubChem, and Mass Bank