Each year IUPAC endorses a large number of independently organized conferences, symposiums and workshops that cover a wide range of specialized topics in chemistry. Endorsement by IUPAC attests to the quality of the scientific program and indicates the host country’s assurance that scientists from all countries may participate. See program details. In addition, the calendar below includes webinars and workshops related to specific IUPAC projects or joint activities with associated organizations.

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3 Nov 2026 - 5 Nov 2026

5th Ontologies4Chem Workshop

Following the positive experience of last year’s event, the 5th Ontologies4Chem Workshop aims to continue fostering open discussions, hands-on collaboration, and community-driven progress in chemical ontologies and semantic infrastructure.

Event Fact-Sheet

Schedule:

  • Arrival Day: November 2, 2026.
  • Workshop Core Program: November 3–5, 2026.
  • Departure Day: November 6, 2026.

Venue: Domhotel Limburg, Grabenstraße 57, 65549 Limburg, Germany.

Organizers: NFDI4Chem.

Contact: ontologies@nfdi4chem.de

A Community-Driven Agenda

This year, the workshop adopts a new, highly interactive approach to organize the event. Similarly to MADICES, a public GitHub repository has been set up to gather, discuss, and vote on ideas for topics. The goal is to co-create an agenda that truly reflects the most pressing needs, current priorities, and interests of the community.

Call for Contributions

Attendees are warmly invited to propose and upvote topics in the following formats:

  • Presentations: Share relevant ontologies, case studies, technical challenges, or user experiences.
  • Discussion Topics: Propose themes for deeper exploration, such as best practices, interoperability, or ongoing challenges in ontology use.
  • Hacking & Collaborative Sessions: Suggest topics for collaborative problem-solving, hands-on breakout groups, ontology curation, or development.

👉 Submit and vote on ideas here: Ontologies4Chem2026 GitHub Discussions

More Information

Further details, including registration information and the preliminary agenda, will be published in the coming months on the official event page: https://nfdi4chem.de/event/5th-ontologies4chem-workshop/

The recent IUPAC project, “Enhancing the technical architecture and programmatic services of the IUPAC Gold Book,” will be presented in detail at this workshop, showcasing our ongoing efforts to modernize chemical data standards. Learn more: https://iupac.org/project/2026-030-1-024/