# OriGinal Chemical Ontology (OGCO)

> The Original Chemical Ontology was developed by Michael Ashburner & Pankaj Jaiswal in 2002,...

- Page: https://library.schematica.io/model/166669e50e7f460cab03b2d35c894a22
- Model type: Ontology
- License: CC BY 4.0
- Access type: Free
- Access method: Download
- Model size: Mid
- Formats: OWL
- Domains: Healthcare
- External link: https://bioportal.bioontology.org/ontologies/OGCO
- Contact: Chris Mungall (cjmungall@lbl.gov)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | OGCO |
| Description | The Original Chemical Ontology was developed by Michael Ashburner & Pankaj Jaiswal in 2002, before development shifted to CHEBI. It was revived by Chris Mungall for purposes of comparison with the current CHEBI and CHEMESSENCE |
| Format | OWL |
| Categories | Chemical |
| Groups |  |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 8,776 |
| Individuals | 0 |
| Properties | 0 |
| Max Depth | 17 |
| Max Child Count | 144 |
| Average Child Count | 3 |
| Classes With One Child | 1,030 |
| Classes With More Than 25 Children | 25 |
| Classes With No Definition | 8,776 |

## Projects using OGCO

No projects using OGCO

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Source: https://library.schematica.io/model/166669e50e7f460cab03b2d35c894a22