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L-Ornithine

L-Ornithine Structure
CAS No.
70-26-8
Chemical Name:
L-Ornithine
Synonyms
ORNITHINE;2,5-diaminopentanoic acid;Arginine EP Impurity C;Ornithine Phenylacetate;(S)-2,5-Diaminovaleric acid;H-Orn-OH;L-ORNITHINE;vL-Ornithine;laevo-ornithine;L-ORNITHINE,0.98
CBNumber:
CB2199856
Molecular Formula:
C5H12N2O2
Molecular Weight:
132.16
MOL File:
70-26-8.mol
MSDS File:
SDS
Modify Date:
2024/7/2 8:55:03

L-Ornithine Properties

Melting point 140°C
Boiling point 244.08°C (rough estimate)
alpha D25 +11.5° (c = 6.5)
Density 1.1740 (rough estimate)
refractive index 1.4496 (estimate)
storage temp. under inert gas (nitrogen or Argon) at 2–8 °C
solubility Water: 50 mg/mL (378.33 mM); DMSO: < 1 mg/mL (insoluble or slightly soluble)
pka 1.705(at 25℃)
form Solid
color White to off-white
InChI InChI=1S/C5H12N2O2/c6-3-1-2-4(7)5(8)9/h4H,1-3,6-7H2,(H,8,9)/t4-/m0/s1
InChIKey AHLPHDHHMVZTML-BYPYZUCNSA-N
SMILES C(O)(=O)[C@H](CCCN)N
LogP -4.220
CAS DataBase Reference 70-26-8(CAS DataBase Reference)
EPA Substance Registry System L-Ornithine (70-26-8)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P261-P305+P351+P338
Toxicity sce-hmn-lym 10 mg/L MUREAV 372,75,1996

L-Ornithine Chemical Properties,Uses,Production

Uses

hepatoprotectant, anticholesteremic

Definition

ChEBI: An optically active form of ornithine having L-configuration.

Safety Profile

Mutation data reported. When heated to decomposition it emits toxic vapors of NOx.

Purification Methods

Crystallise L-ornithine from water containing 1mM EDTA (to remove metal ions). [Perrin J Chem Soc 3125 1958, Rivard Biochemical Preparations 3 97 1955, Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 pp 2477-2491 1961, Beilstein 4 III 1346, 4 IV 2644.]

L-Ornithine Preparation Products And Raw materials

Raw materials

Preparation Products

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L-ORNITHINE (2S)-2,5-Diaminopentanoic acid 5-Amino-L-norvaline Arginine Impurity 3(Arginine EP Impurity C)(Ornithine) L-Ornithine USP/EP/BP L-ORNITHINE,0.98 Lysine acetate EP Impurity E laevo-ornithine TIANFU-CHEM_L-Ornithine,cas:70-26-8 (S)-2,5-Diaminovaleric acid ORNITHINE 2,5-diaminopentanoic acid Ornithine Phenylacetate Arginine EP Impurity C vL-Ornithine Ornithine,L-Ornithine,Ornithinum, BRN 1722298 L-Ornithine ((S)-2,5-Diaminopentanoic acid) H-Orn-OH L-Ornithine(Arginine EP Impurity C) 70-26-8 Inhibitors Amino Acids Nutritional Supplements