Table 2 Formula distribution for the HS samples used in this study.

From: Examination of molecular space and feasible structures of bioactive components of humic substances by FTICR MS data mining in ChEMBL database

Sample

MS CHO formulae (% of all assignments)

Unique Formulae[a]

in ChEMBL[b]

CHA-GL

989 (45)

206

151

CHA-POW

2653 (69)

459

307

CHA-SH4

1361 (52)

102

3

CHM-GL

1543 (63)

36

0

CHM-Irk

2597 (77)

124

39

CHM-POW

2748 (81)

39

8

HQ-FA

885 (100)

29

4

MHQ-FA

745 (100)

2

0

PHA-T7

4488 (92)

1332

676

PHA-TTL

2397 (84)

51

10

Total

20,406

(6502 different)

2380

1198

  1. [a]Formulae present only in a particular sample.
  2. [b]Unique formulae for a sample that were found in ChEMBL.