Lysyl ornithine

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  • Identifiers

    CAS number
    788121-81-3

    Molecular formula
    C11H24N4O3

    SMILES
    C(CCN)C[C@@H](C(=O)N[C@@H](CCCN)C(=O)O)N

    Safety labels

  • Odor profile

    Fragrance
    Odorless 60.62%
    Fishy 54.48%
    Savory 34.74%
    Meaty 26.73%
    Cooling 25.51%
    Cheesy 24.07%
    Ripe 22.4%
    Animal 21.99%
    Oily 16.3%
    Cooked 16.19%

     

    Flavor
    Odorless 55.35%
    Bland 32.57%
    Bitter 32.36%
    Mild 29.46%
    Faint 22.52%
    Sweet-like 21.73%
    Nitrile 19.9%
    Glue 19.14%
    Bloody 19.1%
    Bouillon 19.0%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -4.9

    pKa est.
    5.12 (weak acid)

    Molecular weight
    260.33 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    412°C

    Flash point

    • 216.83 ˚C est.

  • Synonyms

    • Lysyl ornithine
    • 788121-81-3
    • Dipeptide ko-a
    • RE2575OKNJ
    • L-Ornithine, N2-L-lysyl-
    • (S)-5-Amino-2-((S)-2,6-diaminohexanamido)pentanoic acid
    • (2S)-5-amino-2-[[(2S)-2,6-diaminohexanoyl]amino]pentanoic acid
    • starbld0012104
    • Lysyl ornithine [INCI]
    • UNII-RE2575OKNJ
    • orb1985775
    • SCHEMBL29397156
    • AKOS040752850
    • Q27288075
    • 788121-81-3

  • Applications

    Lysyl ornithine is commonly used as a building block or intermediate in peptide synthesis and related aminated compounds, enabling incorporation into defined sequences for research and pharmaceutical development. It can function as a chelating or complexing agent in industrial formulations due to its amino and carboxyl groups. It may serve as a processing modifier in polymers and plastics to improve compatibility or functionality. In cosmetics and personal care, it is evaluated as a conditioning or pH‑adjusting ingredient in formulations. In cleaning and household products, it can act as a buffering or metal‑binding component. In broader industrial manufacturing, it is often explored as an intermediate for specialty chemical synthesis.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 0.42
    methanol 4.17
    isopropanol 0.16
    water 301.29
    ethyl acetate 0.24
    n-propanol 0.29
    acetone 0.18
    n-butanol 0.22
    acetonitrile 0.18
    DMF 8.01
    toluene 0.15
    isobutanol 0.23
    1,4-dioxane 0.4
    methyl acetate 0.14
    THF 0.81
    2-butanone 0.17
    n-pentanol 0.22
    sec-butanol 0.17
    n-hexane 0.07
    ethylene glycol 24.84
    NMP 51.31
    cyclohexane 0.17
    DMSO 80.88
    n-butyl acetate 0.31
    n-octanol 0.08
    chloroform 0.23
    n-propyl acetate 0.21
    acetic acid 27.51
    dichloromethane 0.31
    cyclohexanone 1.64
    propylene glycol 8.81
    isopropyl acetate 0.23
    DMAc 12.91
    2-ethoxyethanol 2.84
    isopentanol 0.25
    n-heptane 0.08
    ethyl formate 0.86
    1,2-dichloroethane 0.27
    n-hexanol 0.34
    2-methoxyethanol 7.01
    isobutyl acetate 0.13
    tetrachloromethane 0.17
    n-pentyl acetate 0.17
    transcutol 4.38
    n-heptanol 0.24
    ethylbenzene 0.14
    MIBK 0.22
    2-propoxyethanol 2.66
    tert-butanol 0.27
    MTBE 0.07
    2-butoxyethanol 1.56
    propionic acid 3.55
    o-xylene 0.32
    formic acid 273.87
    diethyl ether 0.07
    m-xylene 0.21
    p-xylene 0.2
    chlorobenzene 0.15
    dimethyl carbonate 1.12
    n-octane 0.04
    formamide 102.17
    cyclopentanone 2.22
    2-pentanone 0.22
    anisole 0.19
    cyclopentyl methyl ether 0.66
    gamma-butyrolactone 5.56
    1-methoxy-2-propanol 2.82
    pyridine 0.73
    3-pentanone 0.29
    furfural 13.45
    n-dodecane 0.01
    diethylene glycol 15.03
    diisopropyl ether 0.06
    tert-amyl alcohol 0.33
    acetylacetone 1.17
    n-hexadecane 0.02
    acetophenone 0.72
    methyl propionate 0.47
    isopentyl acetate 0.36
    trichloroethylene 0.6
    n-nonanol 0.1
    cyclohexanol 0.83
    benzyl alcohol 0.79
    2-ethylhexanol 0.27
    isooctanol 0.21
    dipropyl ether 0.21
    1,2-dichlorobenzene 0.29
    ethyl lactate 1.44
    propylene carbonate 3.64
    n-methylformamide 6.64
    2-pentanol 0.15
    n-pentane 0.04
    1-propoxy-2-propanol 1.43
    1-methoxy-2-propyl acetate 1.25
    2-(2-methoxypropoxy) propanol 1.86
    mesitylene 0.2
    ε-caprolactone 2.37
    p-cymene 0.19
    epichlorohydrin 1.29
    1,1,1-trichloroethane 0.12
    2-aminoethanol 10.82
    morpholine-4-carbaldehyde 16.9
    sulfolane 48.42
    2,2,4-trimethylpentane 0.03
    2-methyltetrahydrofuran 0.4
    n-hexyl acetate 0.16
    isooctane 0.02
    2-(2-butoxyethoxy)ethanol 2.15
    sec-butyl acetate 0.16
    tert-butyl acetate 0.34
    decalin 0.08
    glycerin 63.14
    diglyme 3.58
    acrylic acid 10.45
    isopropyl myristate 0.08
    n-butyric acid 3.13
    acetyl acetate 0.7
    di(2-ethylhexyl) phthalate 0.45
    ethyl propionate 0.31
    nitromethane 9.09
    1,2-diethoxyethane 0.23
    benzonitrile 0.39
    trioctyl phosphate 0.3
    1-bromopropane 0.08
    gamma-valerolactone 8.23
    n-decanol 0.08
    triethyl phosphate 0.71
    4-methyl-2-pentanol 0.16
    propionitrile 0.14
    vinylene carbonate 3.41
    1,1,2-trichlorotrifluoroethane 19.31
    DMS 0.72
    cumene 0.15
    2-octanol 0.1
    2-hexanone 0.17
    octyl acetate 0.11
    limonene 0.24
    1,2-dimethoxyethane 1.45
    ethyl orthosilicate 0.61
    tributyl phosphate 0.36
    diacetone alcohol 1.83
    N,N-dimethylaniline 0.45
    acrylonitrile 0.45
    aniline 0.59
    1,3-propanediol 5.56
    bromobenzene 0.12
    dibromomethane 0.18
    1,1,2,2-tetrachloroethane 0.68
    2-methyl-cyclohexyl acetate 0.54
    tetrabutyl urea 0.6
    diisobutyl methanol 0.2
    2-phenylethanol 0.76
    styrene 0.12
    dioctyl adipate 0.21
    dimethyl sulfate 8.42
    ethyl butyrate 0.38
    methyl lactate 5.56
    butyl lactate 1.05
    diethyl carbonate 0.35
    propanediol butyl ether 2.18
    triethyl orthoformate 0.54
    p-tert-butyltoluene 0.18
    methyl 4-tert-butylbenzoate 1.26
    morpholine 0.77
    tert-butylamine 0.13
    n-dodecanol 0.07
    dimethoxymethane 1.1
    ethylene carbonate 2.08
    cyrene 9.01
    2-ethoxyethyl acetate 0.38
    2-ethylhexyl acetate 0.28
    1,2,4-trichlorobenzene 0.45
    4-methylpyridine 0.45
    dibutyl ether 0.06
    2,6-dimethyl-4-heptanol 0.2
    DEF 1.37
    dimethyl isosorbide 4.98
    tetrachloroethylene 0.98
    eugenol 1.84
    triacetin 0.78
    span 80 2.22
    1,4-butanediol 2.93
    1,1-dichloroethane 0.07
    2-methyl-1-pentanol 0.27
    methyl formate 4.27
    2-methyl-1-butanol 0.28
    n-decane 0.02
    butyronitrile 0.14
    3,7-dimethyl-1-octanol 0.1
    1-chlorooctane 0.04
    1-chlorotetradecane 0.02
    n-nonane 0.02
    undecane 0.02
    tert-butylcyclohexane 0.04
    cyclooctane 0.1
    cyclopentanol 1.14
    tetrahydropyran 0.22
    tert-amyl methyl ether 0.13
    2,5,8-trioxanonane 3.5
    1-hexene 0.09
    2-isopropoxyethanol 1.12
    2,2,2-trifluoroethanol 24.79
    methyl butyrate 0.47

    Scent© AI

1 4

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction