Ontology

RXNO

Name Reaction Ontology

RXNO is the name reaction ontology. It contains more than 500 classes representing organic reactions such as the Diels–Alder cyclization.

chemistrymolecular chemistrynfdi4catnfdi4chemoboontologyreaction data
B78

FAIR 44/48

Version 2021-12-16

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagegithub.com DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in BioPortalNCBO BioPortalBrowse in OBO FoundryOBO Foundry registry

Portals & registries

SourceIDVersionClassesPropertiesIndividualsLoaded
OLS (EMBL-EBI)rxno2021-12-161,01949025 Oct 2026
TIB Terminology Servicerxno2021-12-161,01949014 Jun 2024
OBO Dashboardrxno2021-12-161,019——11 Dec 2025

Ontology IRI http://purl.obolibrary.org/obo/rxno.owl
Version IRI http://purl.obolibrary.org/obo/rxno/releases/2021-12-16/rxno.owl

Languages en

Imports from (5)
BFO CHEBI IAO MOP OBI

Reused by (2)
MOP VALUESETS

Logical consistency
consistent · 0 unsatisfiable
OWL 2 DL
yes
ROBOT report
0 errors · 2 warnings · 1 info
OBO principles
FP01FP02FP03FP04FP05FP06FP07FP08FP09FP11FP12FP16FP20
Axioms
8,342 · 35.51% entities reused

Also registered as
aberowl: RXNO bioportal: RXNO fairsharing: FAIRsharing.w4tncg obofoundry: rxno ols: rxno ontobee: RXNO tib.ts: rxno

Automated evaluation

F Findable FAIR9/12
  • Persistent identifier (F1)purl.obolibrary.org+4
  • Indexed in services (F4)6: OLS, TIB, BioPortal, OBO Foundry, Bioregistry, FAIRsharing+5
  • Citable reference (F2)no reference publication listed0
A Accessible FAIR12/12
  • Homepage reachableHTTP 200+3
  • Artefact retrievable over HTTP(S) (A1)download HTTP 200+6
  • Metadata persists in a registry (A2)OBO Foundry, Bioregistry+3
I Interoperable FAIR12/12
  • Formal machine-readable format (I1)OWL, OBO+5
  • Semantic-web IRIs (I2)OWL, OBO+3
  • References other vocabularies (I3)imports 5: bfo, chebi, iao, mop, obi+4
R Reusable FAIR11/12
  • Clear license (R1.1)CC BY 4.0+5
  • Release provenance (R1.2)2021-12-16 (version IRI in the artefact)+4
  • Community standards (R1.3)OBO principles: 9/13 checks pass+2
Q Ontology consistency & quality19/20
  • Logical consistencyconsistent, 0 unsatisfiable classes (OBO Dashboard)+10
  • OWL 2 DL profilein OWL 2 DL+2
  • Upper-ontology alignmentimports BFO+3
  • Standard relations (RO)does not import the Relation Ontology0
  • ROBOT report: no errors0 errors+2
  • ROBOT report: warning density2 warnings / 1019 classes = 0.00+1
  • Pitfall scan: no critical pitfallsno pitfall scan yet; ROBOT report has 0 errors+1
M Maintenance12/16
  • Recency2026-10-23 → 0.1 months (≤ 3 months)+10
  • Release cadence (12 months)1 release (GitHub releases)+2
U Community adoption3/16
  • Documented adopting projects0 projects0
  • Reused by other ontologies2: mop, valuesets+1
  • Community signalmax(stars 49 → 2, citations 0 → 0)+2
P Penalties (inactivity & inconsistency)0
  • Time since last activity0.0 years → 4 × max(0, 0.0 − 1)0
  • Inactive statusnot archived, legacy or inactive0
  • Consistencyconsistent, no unsatisfiable classes0

FAIR subtotal 44/48 · earned 78/100 = 78/100 → grade B

Community adoption 0

No adopting projects documented yet.

Know a project that uses RXNO? Suggest it.

History & changes 1 run

History starts with the first archived run; changes appear after the next evaluation.

RunScoreFAIRVersion evaluatedTermsSnapshot
26 Oct 2026, 03:31 UTC78 B442021-12-161,019JSON

Provenance

Every fact on this page was fetched automatically. Each row shows where it came from and when. If a source fails, the last good value is kept and marked “carried forward”.

FactSourceRetrieved
Homepage link check (HTTP 200)github.com26 Oct 2026, 03:19 UTC
Repository link check (HTTP 200)github.com26 Oct 2026, 03:19 UTC
Download link check (HTTP 200)purl.obolibrary.org26 Oct 2026, 03:19 UTC
Artefact header (version IRI)raw.githubusercontent.com26 Oct 2026, 03:19 UTC
Git refs (commit 90a00ad)github.com26 Oct 2026, 03:19 UTC
GitHub repository statisticsapi.github.com26 Oct 2026, 03:19 UTC
OLS classes, imports, version & releaseebi.ac.uk26 Oct 2026, 03:19 UTC
OBO Foundry status, license & usagesobofoundry.org26 Oct 2026, 02:37 UTC
TIB Terminology Service metricsservice.tib.eu26 Oct 2026, 03:19 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 03:19 UTC
OBO Dashboard (checked 11 Dec 2025)dashboard.obofoundry.org26 Oct 2026, 02:37 UTC

Run 2026-10-26T02-37-38Z · evaluator v2.0.0 · rubric v3.4 · entry.json · run snapshot