Evidence map›Paper›PMID 34030732›Full record

ArticleJournal of cheminformatics2021

InChI version 1.06: now more than 99.99% reliable.

Jonathan M Goodman, Igor Pletnev, Paul Thiessen, Evan Bolton, Stephen R Heller

Abstract read
In one paragraph

Article in Journal of cheminformatics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed.

  1. Article
  2. Article
  3. The IUPHAR/BPS Guide to PHARMACOLOGY in 2026.Nucleic acids research · 2026
    Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. ECBD: European chemical biology database.Nucleic acids research · 2025
    Article
  11. InChI isotopologue and isotopomer specifications.Journal of cheminformatics · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Microbiome modeling: a beginner's guide.Frontiers in microbiology · 2024
    Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Jonathan M GoodmanCentre for Molecular Informatics, Yusuf Hamied Department of Chemistry, Lensfield Road, Cambridge, CB2 1EW, UK.ORCID http://orcid.org/0000-0002-8693-9136
Igor PletnevInChI Trust, Cambridge, UK.ORCID http://orcid.org/0000-0001-7175-2136
Paul ThiessenNational Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, 20894, USA.ORCID http://orcid.org/0000-0002-1992-2086
Evan BoltonNational Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, 20894, USA.ORCID http://orcid.org/0000-0002-5959-6190
Stephen R HellerInChI Trust, Cambridge, UK. jmg11@cam.ac.uk.ORCID http://orcid.org/0000-0002-5538-8482

Funding

National Biomedical Information ServicesZIHLM200888 · NLM · NATIONAL LIBRARY OF MEDICINE · PI PALTOO, DINA · 2009 to 2025
$5200.7M
InChI Trust InChI TrustU.S. National Library of Medicine U.S. National Library of Medicine
6 · The paper itself

Abstract

The software for the IUPAC Chemical Identifier, InChI, is extraordinarily reliable. It has been tested on large databases around the world, and has proved itself to be an essential tool in the handling and integration of large chemical databases. InChI version 1.05 was released in January 2017 and version 1.06 in December 2020. In this paper, we report on the current state of the InChI Software, the details of the improvements in the v1.06 release, and the results of a test of the InChI run on PubChem, a database of more than a hundred million molecules. The upgrade introduces significant new features, including support for pseudo-element atoms and an improved description of polymers. We expect that few, if any, applications using the standard InChI will need to change as a result of the changes in version 1.06. Numerical instability was discovered for 0.002% of this database, and a small number of other molecules were discovered for which the algorithm did not run smoothly. On the basis of PubChem data, we can demonstrate that InChI version 1.05 was 99.996% accurate, and InChI version 1.06 represents a step closer to perfection. Finally, we look forward to future releases and extensions for the InChI Chemical identifier.

Indexed as

InChIInChIKeyPubChemRInChI

Identifiers

PMID34030732
PMCPMC8147039

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.