epsilon-Acetyl-L-lysine

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  • Identifiers

    CAS number
    692-04-6

    Molecular formula
    C8H16N2O3

    SMILES
    CC(=O)NCCCC[C@@H](C(=O)O)N

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 55.92%
    Savory 43.67%
    Meaty 39.39%
    Fishy 33.76%
    Cooling 26.85%
    Sweet 25.93%
    Cooked 20.6%
    Cheesy 20.55%
    Milky 18.48%
    Roasted 17.2%

     

    Flavor
    Odorless 62.22%
    Mild 36.58%
    Bland 28.28%
    Sulfury 23.03%
    Faint 22.92%
    Sweet-like 22.02%
    Yeast 21.77%
    Cooked 20.22%
    Acrid 19.63%
    Bay oil 19.6%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -2.8

    pKa est.
    7.2 (neutral)

    Molecular weight
    188.22 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    399°C

    Melting point expt.

    • 250 °C

    Flash point

    • 186.65 ˚C est.

  • Synonyms

    • 692-04-6
    • N6-Acetyl-L-lysine
    • N-Epsilon-acetyllysine
    • (2S)-2-amino-6-acetamidohexanoic acid
    • Omega-acetyllsine
    • N(6)-acetyllsine
    • 470AD5VY1X
    • epsilon-Acetyl-L-lysine
    • DTXSID90862371
    • RefChem:921071
    • DTXCID401527695
    • N-epsilon-Acetyl-L-lysine
    • Nepsilon-Acetyl-L-lysine
    • H-Lys(Ac)-OH
    • n6-acetyllysine
    • (S)-6-Acetamido-2-aminohexanoic acid
    • N(6)-ACETYLLYSINE
    • MFCD00002639
    • Ne-Acetyllysine
    • N(6)-Acetyl-L-lysine
    • N(epsilon)-acetyl-L-lysine
    • N(zeta)-acetyllysine
    • N~6~-acetyl-L-lysine
    • N(zeta)-acetyl-L-lysine
    • epsilon-N-acetyl-L-lysine
    • (2S)-6-acetamido-2-aminohexanoic acid
    • N.epsilon.-Acetyl-L-lysine
    • (2S)-6-(acetylamino)-2-aminohexanoic acid
    • acetyllysine
    • L-Lysine, N6-acetyl-
    • UNII-470AD5VY1X
    • e-N-Acetyllysine
    • N-e-Acetyllysine
    • NSC-102777
    • e-acetyl-l-lysine
    • EINECS 211-725-9
    • L-e-N-Acetyllysine
    • Ne-Acetyl-L-lysine
    • Lysine Impurity 19
    • NSC 102777
    • e-N-Acetyl-L-lysine
    • N-e-Acetyl-L-lysine
    • w-N-Acetyl-L-lysine
    • epsilon-N-Acetyllysine
    • L-Lys(Ac)-OH
    • H-L-Lys(Ac)-OH
    • L-epsilon-N-Acetyllysine
    • omega-N-Acetyl-L-lysine
    • lysine, omega-N-acetyl-
    • bmse000353
    • L-Lysine, N(6)-acetyl-
    • LYSINE, N6-ACETYL-
    • N-.epsilon.-Acetyl-L-lysine
    • SCHEMBL236178
    • orb1299219
    • .EPSILON.-N-ACETYLLYSINE
    • CHEMBL1230958
    • CHEBI:17752
    • MSK167126
    • AKOS016844372
    • EBC-616080
    • FA48420
    • (2S)-6-acetamido-2-amino-hexanoic acid
    • AS-46943
    • SY051379
    • DB-343924
    • HY-113426
    • A2652
    • CS-0059465
    • S6075
    • ST50307992
    • C02727
    • F10994
    • EN300-7365557
    • F324288
    • 6-N-Acetyl-L-lysine-3,3,4,4,5,5,6,6-d8
    • Q4673311
    • F0001-3143
    • FB4777AC-AEFF-40D6-B766-C84C543F5479
    • 692-04-6

  • Applications

    epsilon-Acetyl-L-lysine, CAS 692-04-6, is an N-acetylated lysine derivative (acetyl on the epsilon amino group) that is commonly used as an intermediate or building block in peptide synthesis and pharmaceutical development; in biochemical and enzymology research, it serves as a standard or probe to model lysine acetylation and to support the design of modified peptides and PTM mimics; it is also used as a precursor for the synthesis of peptide/protein conjugates and related derivatives, and can function as an analytical standard in proteomics workflows for PTM analysis; subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1.73
    methanol 14.26
    isopropanol 0.7
    water 331.74
    ethyl acetate 0.64
    n-propanol 1.01
    acetone 0.43
    n-butanol 0.8
    acetonitrile 0.37
    DMF 21.13
    toluene 0.25
    isobutanol 1.18
    1,4-dioxane 1.1
    methyl acetate 0.35
    THF 3.54
    2-butanone 0.45
    n-pentanol 0.96
    sec-butanol 0.84
    n-hexane 0.15
    ethylene glycol 41.59
    NMP 71.84
    cyclohexane 0.15
    DMSO 98.72
    n-butyl acetate 0.64
    n-octanol 0.53
    chloroform 0.44
    n-propyl acetate 0.48
    acetic acid 48.78
    dichloromethane 0.48
    cyclohexanone 4.3
    propylene glycol 27.26
    isopropyl acetate 0.67
    DMAc 37.61
    2-ethoxyethanol 11.26
    isopentanol 1.45
    n-heptane 0.12
    ethyl formate 2.31
    1,2-dichloroethane 0.39
    n-hexanol 1.26
    2-methoxyethanol 23.23
    isobutyl acetate 0.41
    tetrachloromethane 0.32
    n-pentyl acetate 0.58
    transcutol 17.92
    n-heptanol 0.92
    ethylbenzene 0.29
    MIBK 0.99
    2-propoxyethanol 8.1
    tert-butanol 2.24
    MTBE 0.44
    2-butoxyethanol 4.61
    propionic acid 8.02
    o-xylene 0.69
    formic acid 257.68
    diethyl ether 0.17
    m-xylene 0.53
    p-xylene 0.44
    chlorobenzene 0.29
    dimethyl carbonate 1.12
    n-octane 0.07
    formamide 104.61
    cyclopentanone 5.46
    2-pentanone 0.57
    anisole 0.65
    cyclopentyl methyl ether 1.65
    gamma-butyrolactone 11.56
    1-methoxy-2-propanol 9.07
    pyridine 1.06
    3-pentanone 0.62
    furfural 23.5
    n-dodecane 0.04
    diethylene glycol 28.54
    diisopropyl ether 0.21
    tert-amyl alcohol 2.71
    acetylacetone 2.49
    n-hexadecane 0.05
    acetophenone 1.67
    methyl propionate 0.96
    isopentyl acetate 1.0
    trichloroethylene 0.89
    n-nonanol 0.56
    cyclohexanol 2.18
    benzyl alcohol 2.31
    2-ethylhexanol 0.83
    isooctanol 0.92
    dipropyl ether 0.43
    1,2-dichlorobenzene 0.52
    ethyl lactate 2.87
    propylene carbonate 6.63
    n-methylformamide 12.61
    2-pentanol 0.54
    n-pentane 0.07
    1-propoxy-2-propanol 4.06
    1-methoxy-2-propyl acetate 2.43
    2-(2-methoxypropoxy) propanol 8.06
    mesitylene 0.51
    ε-caprolactone 5.67
    p-cymene 0.47
    epichlorohydrin 2.76
    1,1,1-trichloroethane 0.28
    2-aminoethanol 33.23
    morpholine-4-carbaldehyde 34.81
    sulfolane 51.54
    2,2,4-trimethylpentane 0.09
    2-methyltetrahydrofuran 1.56
    n-hexyl acetate 0.82
    isooctane 0.06
    2-(2-butoxyethoxy)ethanol 8.83
    sec-butyl acetate 0.44
    tert-butyl acetate 1.25
    decalin 0.14
    glycerin 102.62
    diglyme 11.65
    acrylic acid 15.41
    isopropyl myristate 0.39
    n-butyric acid 7.42
    acetyl acetate 1.2
    di(2-ethylhexyl) phthalate 2.02
    ethyl propionate 0.65
    nitromethane 16.39
    1,2-diethoxyethane 0.82
    benzonitrile 1.08
    trioctyl phosphate 1.13
    1-bromopropane 0.15
    gamma-valerolactone 20.67
    n-decanol 0.46
    triethyl phosphate 1.26
    4-methyl-2-pentanol 0.81
    propionitrile 0.36
    vinylene carbonate 5.62
    1,1,2-trichlorotrifluoroethane 24.65
    DMS 1.46
    cumene 0.4
    2-octanol 0.49
    2-hexanone 0.51
    octyl acetate 0.58
    limonene 0.57
    1,2-dimethoxyethane 6.8
    ethyl orthosilicate 1.14
    tributyl phosphate 1.21
    diacetone alcohol 6.64
    N,N-dimethylaniline 1.28
    acrylonitrile 0.92
    aniline 1.13
    1,3-propanediol 19.16
    bromobenzene 0.23
    dibromomethane 0.3
    1,1,2,2-tetrachloroethane 1.07
    2-methyl-cyclohexyl acetate 1.46
    tetrabutyl urea 2.22
    diisobutyl methanol 0.71
    2-phenylethanol 1.96
    styrene 0.23
    dioctyl adipate 1.03
    dimethyl sulfate 7.0
    ethyl butyrate 0.73
    methyl lactate 7.67
    butyl lactate 2.77
    diethyl carbonate 0.61
    propanediol butyl ether 8.28
    triethyl orthoformate 0.99
    p-tert-butyltoluene 0.47
    methyl 4-tert-butylbenzoate 4.15
    morpholine 2.06
    tert-butylamine 0.77
    n-dodecanol 0.38
    dimethoxymethane 2.79
    ethylene carbonate 3.56
    cyrene 17.62
    2-ethoxyethyl acetate 1.22
    2-ethylhexyl acetate 0.67
    1,2,4-trichlorobenzene 0.7
    4-methylpyridine 1.01
    dibutyl ether 0.27
    2,6-dimethyl-4-heptanol 0.71
    DEF 3.04
    dimethyl isosorbide 13.48
    tetrachloroethylene 1.39
    eugenol 5.87
    triacetin 2.53
    span 80 7.34
    1,4-butanediol 10.61
    1,1-dichloroethane 0.16
    2-methyl-1-pentanol 1.56
    methyl formate 9.06
    2-methyl-1-butanol 1.54
    n-decane 0.07
    butyronitrile 0.44
    3,7-dimethyl-1-octanol 0.77
    1-chlorooctane 0.15
    1-chlorotetradecane 0.09
    n-nonane 0.06
    undecane 0.05
    tert-butylcyclohexane 0.12
    cyclooctane 0.1
    cyclopentanol 3.63
    tetrahydropyran 0.47
    tert-amyl methyl ether 0.7
    2,5,8-trioxanonane 12.6
    1-hexene 0.23
    2-isopropoxyethanol 4.8
    2,2,2-trifluoroethanol 25.4
    methyl butyrate 1.19

    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