News & Articles

54 posts

InChI Software Downloads

The InChi Trust makes available free open-source software to load and write chemical structures.   In order to keep users of these tools up to date, the Trust requests that you fill in the information below.  We will use the information that you provide on this form solely to notify you about updates and new versions of the InChI open-source software.  You will be able to unsubscribe at any time.

InChI Trust Adds Technical Director and Outreach Director

The InChI Trust added two new part-time positions to help advance the extension of the InChI code as well as its awareness and use across the community. 

  • Gerd Blanke ([email protected]) has started as the Technical Director for the Trust. He will work closely with the working groups to help move the various activities to delivery in next versions of the code. Gerd has held senior positions in information technology and services across the research area of life science and chemical industry. His business development skills span chemical and bio informatics, databases, data analytics, business Intelligence, project management, and management. (

  • Rudy Potenzone ([email protected]) is serving as the Director of Outreach and Marketing, including extensions to the website, a newsletter (InChI OUTREACH), and a program to reach out to potential new sponsors, developers and users.  Rudy is an accomplished executive with a proven track record of developing products for life science informatics, knowledge management, workflow systems and electronic lab notebooks.  (

InChI 1.06 Q&A Webinar

In March 2021, shortly after version 1.06 of the InChI software was released, the InChI Trust and the NIH sponsored a workshop to give users the opportunity to get answers to questions about the new release. The webinar was well attended with 240 people logged into the Zoom workshop, from 37 different countries.

Questions were answered by an expert panel consisting of Jonathan Goodmann, Evan Bolton and Gerd Blanke.

The Trust Board thanks the NIH and NCI for their organizing and running the workshop meeting. In particular the Trust wishes to thank Janelle Cortner (NCI) and her staff for the logistics provided. The event was moderated by Steffen Pauly.

InChI Symposium, San Diego Aug 2019

Status and Future of the IUPAC InChI
InChI Symposium held at the San Diego Convention Center, 23-24 August 2019


Ray Boucher: InChI Trust Report

Ian Bruno: Overview of the Meeting

Community perspectives

Steffen Pauly: Deposit of chemical structure data from publications to public databases

Steve Boyer: Patents

Lutz Weber: Ontologies

Tina Qin:Teaching InChI to chemistry students

Peter Linstrom: NIST WebBook

Bob Belford: Education – InChI OER

Hunter Moseley: Isotopologues

Richard Kidd: Open Source Development

Roger Sayle: SMILES and IUPAC

Yulia Borodina: InChI at the FDA – recent developments, current challenges

Markus Bussen: ChemChain

Project and working group updates

Alex Clark: Mixtures (CDD/NIH projects) MinChI

Leah Rae McEwen, Evan Bolton: Large Molecules – complementarity w/ HELM & Mixtures

David Deng: Use case of HELM

Andrey Yerin: Polymers

Gerd Blanke: Reaction Inchi, RInChI

Marc Niklaus: Tautomers

Ian Bruno: Organometallics

Richard Hartshorn: QR Codes

Vin Scalfani: SMILES+ 

Future discussions

Mark Niklaus: InChI 2.0

Andrey Yerin: Stereochemical configuration

Jonathan Goodman: Variability


Richard Kidd, Ray Boucher: Keeping up the momentum: Brief report from the InChI San Diego workshop

IUPAC/InChI mini-workshop

There will be an IUPAC/InChI mini-workshop at the upcoming Boston ACS meeting. It will be held on the Friday Aug 17 and Saturday Aug 18 prior to the ACS meeting in the Westin Waterfront next to the convention center. There are several break-out sessions planned on current topics relevant to InChI and IUPAC data standards, and some meetings of the InChI Trust. We envision this to be a working meeting focused on advancing various projects and proposals at various stages of completion.

Topics and discussion leads expected:
[1] Large molecules (Evan Bolton)
[2] Organometallics (Ian Bruno)
[3] Mixtures (Leah McEwen, Gerd Blanke, Alex Clark)
[4] Education portal (Bob Belford, Vin Scalfani)
[5] IUPAC file formats – SMILES, CTAB (Evan Bolton, Vin Scalfani)
[6] Variability in InChI general discussion (Leah McEwen, Evan Bolton)
[7] Open discussion on other topics of community interest

Working agenda for the meeting is here.


For further details please contact Evan Bolton or Leah McEwen

Call for papers – Pure & Applied Chemistry – Research Data, Big Data and Chemistry

The International Union of Pure and Applied Chemistry (IUPAC) held a symposium on Research Data, Big Data, and Chemistry at the 2017 World Chemistry Congress in São Paulo. The Union published a special issue of Chemistry International (CI) to accompany the symposium ( We have been asked to develop a special issue on a similar topic for Pure and Applied Chemistry (PAC), the scientific and technical journal of the Union. The CI issue focused on the historical context around research data in chemistry, and also looked at current issues and advocacy around research data. In the PAC issue, we also seek to include more specific examples of research data sharing, successes of big data analyses in chemistry and related areas, ethical considerations in applications of big data technologies in the sciences, as well as education and outreach. The target article length is 8-15 published pages, approximately 4000-7500 words. We aim to receive manuscripts before the end of the year, for publication in the first half to 2018. PAC offers ahead-of-print publication, so articles will be posted as accepted. In addition, PAC offers hybrid Open Access options for authors who desire immediate OA. Authors are also allowed to self-archive the final published manuscript 12 months after publication.

We would welcome your submission to this special issue. If you have any questions, please let us know. We can provide additional details, including instructions on submission. All manuscripts will be subject to the usual PAC peer review process. Also, if you have any colleagues who might be interested in submitting a publication in this area, please let us know.

Thanks for your interest,

Leah McEwen, Cornell University
David Martinsen, David Martinsen Consulting