---
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 chemistry domain encompasses the structured representation and formalization of chemical knowledge, including entities, reactions, processes, and methodologies. It plays a critical role in knowledge representation by enabling the integration, sharing, and computational analysis of chemical data across diverse subfields such as organic, inorganic, physical, and computational chemistry. This domain facilitates the advancement of scientific research and innovation by providing a standardized framework for the precise and interoperable exchange of chemical information.

## 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.