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CAS 70-26-8

CAS 70-26-8 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 70-26-8
CAS 70-26-8PubChem CID 6262

L-(-)-Ornithine

L-ornithine is an optically active form of ornithine having L-configuration. It has a role as a hepatoprotective agent, a mouse metabolite and an algal metabolite. It is an ornithine and a non-proteinogenic L-alpha-amino acid. It is a conjugate base of a L-ornithinium(1+). It is a conjugate acid of a L-ornithinate. It is an enantiomer of a D-ornithine. — ChEBI

IUPAC name
(2S)-2,5-diaminopentanoic acid
Molecular formula
C5H12N2O2
Molecular weight
132.16 g/mol
Exact mass
132.089877630 Da
XLogP3
-4.4
Topological polar surface area
89.3 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
1

Also known as

L-ornithineornithine(S)-2,5-Diaminopentanoic acid(S)-Ornithine(S)-2,5-diaminovaleric acid(S)-alpha,delta-Diaminovaleric acidOrnitina(+)-S-Ornithine
16 more reported names
Ornithinum(S)-2,5-DiaminopentanoateNSC-758894E524N2IXA3CHEBI:15729CHEBI:18257RefChem:8569232,5 Diaminopentanoic AcidA05BA06(2S)-2,5-diaminopentanoate;hydron200-731-72,5-Diaminopentanoate2,5-Diaminovaleric acidOrnithine [INN]Ornithinum [Latin]Ornitina [Spanish]
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 70-26-8

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How CAS 70-26-8 is used on this site

CAS 70-26-8 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 70-26-8 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.