Evidence map›Paper›PMID 29086040›Full record

ArticleJournal of cheminformatics2017

The Chemistry Development Kit (CDK) v2.0: atom typing, depiction, molecular formulas, and substructure searching.

Egon L Willighagen, John W Mayfield, Jonathan Alvarsson, Arvid Berg, Lars Carlsson, Nina Jeliazkova, Stefan Kuhn, Tomáš Pluskal, Miquel Rojas-Chertó, Ola Spjuth and 4 more

Erratum issuedAbstract read
In one paragraph

Article in Journal of cheminformatics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 209 papers.

0numbers the graph read from it
0cells of the map it votes in
209citing 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

209 citing papers in PubMed.

  1. Article
  2. FastRet: Fast and Simple Retention Time Prediction in Liquid Chromatography.Journal of chemical information and modeling · 2026
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  16. In Silico Analysis of CMolecules (Basel, Switzerland) · 2025
    Article
  17. Article
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  19. Article
  20. Article

149 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors.

Egon L WillighagenDepartment of Bioinformatics - BiGCaT, NUTRIM, Maastricht University, 6200 MD, Maastricht, The Netherlands. egon.willighagen@maastrichtuniversity.nl.ORCID http://orcid.org/0000-0001-7542-0286
John W MayfieldNextMove Software Ltd, Cambridge, CB4 0EY, UK.ORCID http://orcid.org/0000-0001-7730-2646
Jonathan AlvarssonDepartment of Pharmaceutical Biosciences, Uppsala University, 751 24, Uppsala, Sweden.ORCID http://orcid.org/0000-0002-8682-7206
Arvid BergDepartment of Pharmaceutical Biosciences, Uppsala University, 751 24, Uppsala, Sweden.
Lars CarlssonAstraZeneca, Innovative Medicines & Early Development, Quantitative Biology, Möndal, Sweden.ORCID http://orcid.org/0000-0001-9491-4134
Nina JeliazkovaIdeaconsult Ltd, A. Kanchev 4, 1000, Sofia, Bulgaria.ORCID http://orcid.org/0000-0002-4322-6179
Stefan KuhnDepartment of Informatics, University of Leicester, Leicester, UK.ORCID http://orcid.org/0000-0002-5990-4157
Tomáš PluskalWhitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA, 02142, USA.ORCID http://orcid.org/0000-0002-6940-3006
Miquel Rojas-ChertóQuímica Clínica Aplicada, 43870, Amposta, Spain.ORCID http://orcid.org/0000-0002-4659-1446
Ola SpjuthDepartment of Pharmaceutical Biosciences, Uppsala University, 751 24, Uppsala, Sweden.ORCID http://orcid.org/0000-0002-8083-2864
Gilleain Torrance, 4 Hanway Place, W1T 1HD, London, UK.ORCID http://orcid.org/0000-0002-8368-6954
Chris T EveloDepartment of Bioinformatics - BiGCaT, NUTRIM, Maastricht University, 6200 MD, Maastricht, The Netherlands.ORCID http://orcid.org/0000-0002-5301-3142
Rajarshi GuhaNational Center for Advancing Translational Sciences, 9800 Medical Center Drive, Rockville, MD, 20850, USA.ORCID http://orcid.org/0000-0001-7403-8819
Christoph SteinbeckInstitute for Inorganic and Analytical Chemistry, Friedrich-Schiller-University, Lessingstr. 8, 07743, Jena, Germany.ORCID http://orcid.org/0000-0001-6966-0814

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe Chemistry Development Kit (CDK) is a widely used open source cheminformatics toolkit, providing data structures to represent chemical concepts along with methods to manipulate such structures and perform computations on them. The library implements a wide variety of cheminformatics algorithms ranging from chemical structure canonicalization to molecular descriptor calculations and pharmacophore perception. It is used in drug discovery, metabolomics, and toxicology. Over the last 10 years, the code base has grown significantly, however, resulting in many complex interdependencies among components and poor performance of many algorithms.

resultsWe report improvements to the CDK v2.0 since the v1.2 release series, specifically addressing the increased functional complexity and poor performance. We first summarize the addition of new functionality, such atom typing and molecular formula handling, and improvement to existing functionality that has led to significantly better performance for substructure searching, molecular fingerprints, and rendering of molecules. Second, we outline how the CDK has evolved with respect to quality control and the approaches we have adopted to ensure stability, including a code review mechanism.

conclusionsThis paper highlights our continued efforts to provide a community driven, open source cheminformatics library, and shows that such collaborative projects can thrive over extended periods of time, resulting in a high-quality and performant library. By taking advantage of community support and contributions, we show that an open source cheminformatics project can act as a peer reviewed publishing platform for scientific computing software. Graphical abstract CDK 2.0 provides new features and improved performance.

Indexed as

BioinformaticsCheminformaticsDepictionJavaMetabolomics

Identifiers

PMID29086040
PMCPMC5461230

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.