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Table 2 PubChem and ChemSpider results (number of pessimistic top 1 ranks) for 473 Eawag Orbitrap spectra

From: MetFrag relaunched: incorporating strategies beyond in silico fragmentation

Weight term

Score term

Weights

\(\omega _{{\mathrm{Frag}}}\)

\(S_{C_{{\mathrm{Frag}}}}\)

1

1

1

0

1

0

0

\(\omega _{{\mathrm{RT}}}\)

\(S_{C_{{\mathrm{RT}}}}\)

1

1

0

1

0

1

0

\(\omega _{{\mathrm{Refs}}}\)

\(S_{C_{{\mathrm{Refs}}}}\)

1

0

1

1

0

0

1

Database

RT source

Top 1 ranks

PubChem

XLOGP3

325 (69 %)

53

322

315

30

10

311

PubChem

CDK XlogP

326 (69 %)

43

322

316

30

8

311

ChemSpider

CDK XlogP

411 (87 %)

113

411

376

105

41

376

  1. The weights indicate where the score term was included (1) or excluded (0) from the candidate ranking. For PubChem \(\omega _{{\mathrm{Refs}}} \cdot S_{C_{{\mathrm{Refs}}}} = \omega _{{\mathrm{Refs}}} \cdot (S_{C_{{\mathrm{PNP + PPC}}}})\); for ChemSpider \(S_{C_{{\mathrm{Refs}}}} = S_{C_{{\mathrm{CRC + CERC + CDC}}}}\) only. See text for explanations