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L -ornithine

  • Product Name: L -ornithine
  • CasNo: 70-26-8
  • Purity:
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CasNo: 70-26-8

Molecular Formula: C5H12N2O2

Factory Sells Factory Supply High Purity L -ornithine 70-26-8 with Efficient Delivery

  • Molecular Formula:C5H12N2O2
  • Molecular Weight:132.162
  • Vapor Pressure:1.08E-05mmHg at 25°C 
  • Melting Point:140 °C 
  • Refractive Index:1.4496 (estimate) 
  • Boiling Point:308.718 °C at 760 mmHg 
  • PKA:1.705(at 25℃) 
  • Flash Point:140.508 °C 
  • PSA:89.34000 
  • Density:1.165 g/cm3 
  • LogP:0.53780 
  • IDLH:2120 

L-Ornithine(Cas 70-26-8) Usage


Ornithine supplements are claimed to enhance the release of growth hormone and to burn excess body fat. Ornithine is necessary for proper immune function and good liver function. L-Ornithine is metabolised to L-arginine. L-arginine stimulates the pituitary release of growth hormone.
Uses L-ornithine is a non-proteinogenic amino acid, which means that it is not used in the synthesis of proteins in the body. It does, however, play a crucial role in the Urea Cycle. The primary health benefits of ornithine include detoxification, supporting muscle growth and recovery as well as improved sleep.

Synthesis Reference(s)

Canadian Journal of Chemistry, 31, p. 1060, 1953 DOI: 10.1139/v53-139

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.]

Who Evaluation

Evaluation year: 2012


70-26-8 Relevant articles

Direct monitoring of biocatalytic deacetylation of amino acid substrates by1H NMR reveals fine details of substrate specificity

De Cesare, Silvia,McKenna, Catherine A.,Mulholland, Nicholas,Murray, Lorna,Bella, Juraj,Campopiano, Dominic J.

supporting information, p. 4904 - 4909 (2021/06/16)

Amino acids are key synthetic building b...

Saccharochelins A-H, Cytotoxic Amphiphilic Siderophores from the Rare Marine Actinomycete Saccharothrix sp. D09

Bian, Xiaoying,Dai, Guangzhi,Jiao, Nianzhi,Liu, Yang,Ravichandran, Vinothkannan,Ren, Xiangmei,Shen, Qiyao,Sui, Haiyan,Zhang, Youming,Zhong, Lin,Zhou, Haibo

, p. 2149 - 2156 (2021/08/20)

Siderophores are secreted by microorgani...

Randomised controlled trial of the effects of L-ornithine on stress markers and sleep quality in healthy workers

Mika Miyake, Takayoshi Kirisako, Takeshi Kokubo, Yutaka Miura, Koji Morishita, Hisayoshi Okamura & Akira Tsuda

, Nutrition Journal, Volume 13, article number 53, (2014)

Serum cortisol levels and the cortisol/DHEA-S ratio were significantly decreased in the L-ornithine group in comparison with the placebo group. Also, anger was reduced and perceived sleep quality was improved in the L-ornithine group.

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