---
license: mit
language:
- en
tags:
- OntoLearner
- ontology-learning
- chemistry
pretty_name: Agricultural
---
<div>
  <img  src="https://raw.githubusercontent.com/sciknoworg/OntoLearner/main/images/logo.png"  alt="OntoLearner"
    style="display: block; margin: 0 auto; width: 500px; height: auto;">
  <h1 style="text-align: center; margin-top: 1em;">Chemistry Domain Ontologies</h1>
</div>

## Overview
The domain of chemistry ontologies encompasses the structured representation and formalization of chemical knowledge, including entities, reactions, processes, and methodologies. It plays a critical role in facilitating interoperability, data integration, and advanced computational modeling across diverse chemical disciplines. By providing a standardized framework, these ontologies enhance the precision and efficiency of information exchange and support the advancement of research and innovation in the chemical sciences.

## Ontologies
| Ontology ID | Full Name | Classes | Properties | Last Updated |
|-------------|-----------|---------|------------|--------------|
| AFO | Allotrope Foundation Ontology (AFO) | 3871 | 318 | 2024-06-28|
| ChEBI | Chemical Entities of Biological Interest (ChEBI) | 220816 | 10 | 01/01/2025|
| CHEMINF | Chemical Information Ontology (CHEMINF) | 358 | 52 | None|
| CHIRO | CHEBI Integrated Role Ontology (CHIRO) | 13930 | 15 | 2015-11-23|
| ChMO | Chemical Methods Ontology (ChMO) | 3202 | 27 | 2022-04-19|
| FIX | FIX Ontology (FIX) | 1163 | 5 | 2020-04-13|
| MassSpectrometry | Mass Spectrometry Ontology (MassSpectrometry) | 3636 | 12 | 12:02:2025|
| MOP | Molecular Process Ontology (MOP) | 3717 | 11 | 2022-05-11|
| NMRCV | Nuclear Magnetic Resonance Controlled Vocabulary (NMRCV) | 757 | 0 | 2017-10-19|
| OntoKin | Chemical Kinetics Ontology (OntoKin) | 83 | 136 | 08 February 2022|
| PROCO | PROcess Chemistry Ontology (PROCO) | 970 | 61 | 04-14-2022|
| PSIMOD | Proteomics Standards Initiative (PSI) Protein Modifications Ontology (PSI-MOD) | 2098 | 4 | 2022-06-13|
| REX | Physico-chemical process ontology (REX) | 552 | 6 | 2025-03-11|
| RXNO | Reaction Ontology (RXNO) | 1109 | 14 | 2021-12-16|
| VIBSO | Vibrational Spectroscopy Ontology (VIBSO) | 598 | 53 | 2024-09-23|

## Dataset Files
Each ontology directory contains the following files:
1. `<ontology_id>.<format>` - The original ontology file
2. `term_typings.json` - Dataset of term to type mappings
3. `taxonomies.json` - Dataset of taxonomic relations
4. `non_taxonomic_relations.json` - Dataset of non-taxonomic relations
5. `<ontology_id>.rst` - Documentation describing the ontology

## Usage
These datasets are intended for ontology learning research and applications.