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Amino acids and derivatives

D-Ornithine

Also known as (R)-ornithine, Ornithine, D-, r-(-)-Ornithine

CAS 348-66-3Formula C5H12N2O2Molar mass 132.16 g/molEC 206-482-0
1 supplier listed
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D-Ornithine chemical structure, C5H12N2O2, CAS 348-66-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
348-66-3
Formula
C5H12N2O2
Molar mass
132.16 g/mol
EC number
206-482-0
HS code
292249
Category
Amino acids and derivatives

What is D-Ornithine?

Plain description, key identifiers and synonyms

D-ornithine is the D-enantiomer of ornithine. It is an intermediate metabolite produced in the urea cycle. It has a role as a mouse metabolite. It is a D-alpha-amino acid and an ornithine. It is a conjugate base of a D-ornithinium(1+). It is an enantiomer of a L-ornithine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2R)-2,5-diaminopentanoic acid
CAS number
348-66-3 CAS number cross-checked
EC number
206-482-0
Molecular formula
C5H12N2O2
UNII
2H368YCK0U
InChIKey
AHLPHDHHMVZTML-SCSAIBSYSA-N
InChI
InChI=1S/C5H12N2O2/c6-3-1-2-4(7)5(8)9/h4H,1-3,6-7H2,(H,8,9)/t4-/m1/s1
Canonical SMILES
NCCCC(N)C(=O)O
Isomeric SMILES
C(C[C@H](C(=O)O)N)CN

Synonyms

  • (R)-ornithine
  • Ornithine, D-
  • r-(-)-Ornithine
  • D-2,5-Diaminopentanoic acid
  • (2R)-2,5-diaminopentanoate
  • (2R)-2,5-diaminopentanoic acid
  • (r)-2,5-diaminopentanoic acid
  • ORD
  • D-Orn
  • (r)-2,5-diaminopentanoicacid

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
132.16 g/molcalc.
Exact mass
132.0899 Dacalc.
LogP (octanol/water)
-0.86calc.
Topological polar surface area
89.34 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
4calc.
Heavy atoms
9calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.8calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

D-Ornithine suppliers

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Where suppliers are based

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D-Ornithine price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Roles

  • animal metabolite
  • eukaryotic metabolite
  • mammalian metabolite
  • metabolite
  • mouse metabolite

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Inactive in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code D-Ornithine is traded under.

HS 2922.49Indicative HS code

Amino-acids, other than those containing more than one kind of oxygen function, and…

World exports in 2024
$3.88B
−11.5% vs 2023, imports $3.87B
2019 to 2024
Top exporters
  1. China38.7%
  2. India * partner reported8.3%
  3. Germany8.1%
Top importers
  1. United States13.4%
  2. Germany11.1%
  3. Japan6.6%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for D-Ornithine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about D-Ornithine, based on the data on this page

What is D-Ornithine?

D-ornithine is the D-enantiomer of ornithine. It is an intermediate metabolite produced in the urea cycle. It has a role as a mouse metabolite. It is a D-alpha-amino acid and an ornithine. It is a conjugate base of a D-ornithinium(1+). It is an enantiomer of a L-ornithine.

What is the CAS number of D-Ornithine?

The CAS registry number of D-Ornithine is 348-66-3.

What is the molecular formula and weight of D-Ornithine?

The molecular formula of D-Ornithine is C5H12N2O2 and its molar mass is 132.16 g/mol.

What is D-Ornithine used for?

Known uses and roles of D-Ornithine include animal metabolite, eukaryotic metabolite, mammalian metabolite, metabolite and mouse metabolite.

Is D-Ornithine hazardous?

No GHS hazard classification for D-Ornithine is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of D-Ornithine?

D-Ornithine is usually classified under HS code 292249 (Amino-acids, other than those containing more than one kind of oxygen function, and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy D-Ornithine?

CompoundList lists 1 supplier of D-Ornithine in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of D-Ornithine?

Suppliers quote D-Ornithine on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle D-Ornithine

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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