What is the NOAEL for L-Ornithine?
L-Ornithine has 4 NOAEL studies in the database. The lowest reported value is E524N2IXA3 UNII. Source: openFDA substances.
NOAEL Data
REACH Registered
Cosmetic Ingredient
L-Ornithine
CAS 70-26-8
L-Ornithine (CAS 70-26-8) is a chemical substance. Key regulatory status: REACH registered, cosmetic ingredient cross-reference; source data from EPA ToxValDB, ECHA REACH.
SOURCE
noael studies public
NOAEL studies
4
SOURCE
chemical inventory jurisdictions
Regulatory lists
0
SOURCE
eu clp annex vi
GHS signal
Not classified
Chemical Identity
CAS, identifiers, formula, and alternate names for the matched substance record.
SOURCE
DSSTox identifiers
6 fields
Name
L-Ornithine
CAS Number
70-26-8
DTXSID
DTXSID00883219
Molecular Formula
C5H12N2O2
InChI Key
AHLPHDHHMVZTML-BYPYZUCNSA-N
Monoisotopic Mass
132.089878
NOAEL Studies
Toxicology endpoints rendered from public NOAEL study rows.
SOURCE
NOAEL studies
Showing 4 of 4 studies
| Value | Unit | Endpoint | Route | Species | Source |
|---|---|---|---|---|---|
| E524N2IXA3 | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| E524N2IXA3 | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| E524N2IXA3 | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| E524N2IXA3 | UNII | FDA UNII substance identifier | - | - | openFDA substances |
Showing 4 of 4 studies
REACH Registration
Registration status from the ECHA REACH registered substances database.
SOURCE
ECHA (EU)
1 records
| Status | Name | EC Number | Link |
|---|---|---|---|
| Registered | L-ornithine | 200-731-7 | ECHA overview → |
Cosmetic Safety Profile
Same-CAS cosmetic ingredient record for cross-vertical context.
SOURCE
CosIng / Ingredients DB
EU Status
permitted
Max
-
Category
Other
Pharmaceutical Data
Same-CAS pharmaceutical records from drug and bioactivity sources.
SOURCE
EMBL-EBI ChEMBL
ORNITHINE
ChEMBL Phase
3
Adverse Events
20
Bioactivity
2
Frequently Asked Questions
Is L-Ornithine used in cosmetics?
Yes, L-Ornithine is also indexed as a cosmetic ingredient under the name Ornithine. View the full cosmetic safety profile on the ingredient page for detailed safety data, SCCS opinions, and regulatory status.
Where does the safety data for L-Ornithine come from?
Safety data is sourced from EPA ToxValDB, EPA DSSTox, ECHA REACH, CosIng / Ingredients DB, ChEMBL / DailyMed. All data traces to primary regulatory sources and is updated from official government databases.
Is L-Ornithine used outside industrial chemicals?
L-Ornithine also appears in cosmetics, pharmaceutical databases.