Lysine

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  • Identifiers

    CAS number
    56-87-1

    Molecular formula
    C6H14N2O2

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

  • Odor profile

    Fragrance
    Odorless 61.87%
    Fishy 54.32%
    Savory 30.85%
    Cheesy 28.25%
    Meaty 25.9%
    Ripe 23.74%
    Cooling 22.36%
    Animal 21.76%
    Sweet 17.4%
    Oily 16.97%

     

    Flavor
    Odorless 58.52%
    Mild 35.54%
    Bland 27.75%
    Sulfury 25.09%
    Faint 24.92%
    Sulfurous 22.44%
    Sweet-like 21.5%
    Glue 20.08%
    Slightly waxy 19.98%
    Bloody 19.97%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -3.0

    pKa est.
    5.27 (weak acid)

    Molecular weight
    146.19 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    308°C

    Melting point expt.

    • 224.5 dec °C
    • 224 °C, decomposes
    • 224.5 °C

    Flash point

    • 149.69 ˚C est.

    Solubility expt.

    • 1000000 mg/L (at 20 °C)
    • Insoluble in ethanol, ethyl ether, acetone, benzene
    • Insolulble in common neutral solvents
    • Very freely soluble in water.
    • Water solubility: >100 g/100 g H20 at 25 °C
    • In water, 5.84X10+5 mg/L at 27 °C
    • 1000.0 mg/mL
    • Soluble in water
    • Slightly soluble (in ethanol)

  • Synonyms

    • L-lysine
    • lysine
    • 56-87-1
    • h-Lys-oh
    • lysine acid
    • (S)-Lysine
    • (2S)-2,6-diaminohexanoic acid
    • Aminutrin
    • alpha-Lysine
    • L-(+)-Lysine
    • (S)-2,6-Diaminocaproic acid
    • (S)-2,6-Diaminohexanoic acid
    • Hydrolysin
    • Lisina
    • Lysinum
    • 25104-18-1
    • Lysinum [Latin]
    • L-lys
    • Lisina [Spanish]
    • L-Norleucine, 6-amino-
    • lysin
    • Lysine, L-
    • (S)-alpha,epsilon-Diaminocaproic acid
    • LYS (IUPAC abbreviation)
    • Lysine [USAN:INN]
    • lys
    • CHEBI:18019
    • L-2,6-Diaminocaproic acid
    • lysina
    • (+)-S-Lysine
    • Hexanoic acid, 2,6-diamino-, (S)-
    • BRN 1722531
    • HSDB 2108
    • a-Lysine
    • 2,6-Diaminohexanoic acid, (S)-
    • AI3-26523
    • L-Lysin
    • EINECS 200-294-2
    • UNII-K3Z4F929H6
    • 12798-06-0
    • DTXSID6023232
    • 6-ammonio-L-norleucine
    • K3Z4F929H6
    • MFCD00064433
    • DTXCID403232
    • Lysinum (Latin)
    • 4-04-00-02717 (Beilstein Handbook Reference)
    • LYSINE (II)
    • LYSINE [II]
    • LYSINE (MART.)
    • LYSINE [MART.]
    • L-LYSINE, MONOACETATE
    • 3H-Lysine
    • 2,6-diaminohexanoate
    • L-Lysine, labeled with tritium
    • L-aLysine
    • .alpha.-Lysine
    • Lysine homopolymer
    • 1ozv
    • 1yxd
    • 3h-l-lysine
    • 6-amino-Aminutrin
    • NCGC00164527-01
    • L-?Lysine
    • H-Lys
    • (-)-lysine
    • L-Lysine (Standard)
    • 6-amino-L-Norleucine
    • Lysine (USAN/INN)
    • L-2,6-Diainohexanoate
    • L-2,6-Diaminocaproate
    • LYSINE [VANDF]
    • LYSINE [HSDB]
    • LYSINE [USAN]
    • LYSINE [INN]
    • L-LYSINE [FHFI]
    • LYSINE [WHO-DD]
    • (S)-a,e-Diaminocaproate
    • epsilon-Lysine homopolymer
    • LYSINE [MI]
    • L-Lysine, >=97%
    • bmse000043
    • bmse000914
    • Epitope ID:136017
    • (S)-2,6-Diaminohexanoate
    • L-2,6-Diainohexanoic acid
    • CHEMBL8085
    • GTPL724
    • (S)-2,6-diamino-Hexanoate
    • (S)-a,e-Diaminocaproic acid
    • L-Lysine, analytical standard
    • L-Lysine, >=98%, FG
    • HY-N0469R
    • (S)-2,6-diamino-Hexanoic acid
    • B05XB03
    • L-Lysine, >=98% (TLC)
    • BDBM217367
    • (2S)-2,6-Diamino-hexanoic acid
    • HY-N0469
    • L-H2N(CH2)4CH(NH2)COOH
    • Tox21_112158
    • s5630
    • .alpha.,.epsilon.-Diaminocaproic acid
    • AKOS006239081
    • AKOS015855172
    • CCG-266180
    • CS-W019758
    • DB00123
    • FL15266
    • CAS-56-87-1
    • NCGC00166296-02
    • 20166-34-1
    • AC-14492
    • AS-11733
    • DA-54968
    • FL165793
    • TYROSINE IMPURITY B [EP IMPURITY]
    • (S)-.alpha.,.epsilon.-Diaminocaproic acid
    • L-Lysine, crystallized, >=98.0% (NT)
    • L0129
    • L-Lysine, Vetec(TM) reagent grade, >=98%
    • C00047
    • D02304
    • G72513
    • SBI-0633577.0002
    • A919375
    • (S)-2,6-Diaminocaproic acid;(S)-(+)-Lysine;Lysine
    • BRD-K86016185-001-01-3

  • Applications

    L-Lysine (CAS 56-87-1) is an essential amino acid broadly utilized as a feed additive to optimize growth and protein conversion in swine, poultry and aquaculture; a nutrient fortifier in high-protein foods, infant formulas, instant noodles and sports beverages for amino-acid balance and flavor improvement; a pharmaceutical agent for treating lysine deficiency, enhancing calcium absorption, preventing osteoporosis, boosting immunity, accelerating wound healing and suppressing Herpes virus; a buffering component in injectables and cell culture media; a precursor of poly-L-lysine employed as a natural preservative, biomedical material and antimicrobial coating; additionally it acts as a chelating agent in micronutrient fertilizers, a moisturizing and conditioning ingredient in cosmetics and hair care, and a sweetness builder in food flavor formulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 0.02
    methanol 0.35
    isopropanol 0.01
    water 214.45
    ethyl acetate 0.01
    n-propanol 0.01
    acetone 0.01
    n-butanol 0.01
    acetonitrile 0.01
    DMF 0.12
    toluene 0.02
    isobutanol 0.01
    1,4-dioxane 0.02
    methyl acetate 0.01
    THF 0.05
    2-butanone 0.01
    n-pentanol 0.01
    sec-butanol 0.01
    n-hexane 0.01
    ethylene glycol 4.63
    NMP 6.8
    cyclohexane 0.02
    DMSO 7.84
    n-butyl acetate 0.08
    n-octanol 0.02
    chloroform 0.02
    n-propyl acetate 0.02
    acetic acid 3.13
    dichloromethane 0.03
    cyclohexanone 0.15
    propylene glycol 0.82
    isopropyl acetate 0.02
    DMAc 0.5
    2-ethoxyethanol 0.16
    isopentanol 0.02
    n-heptane 0.02
    ethyl formate 0.05
    1,2-dichloroethane 0.02
    n-hexanol 0.05
    2-methoxyethanol 0.26
    isobutyl acetate 0.03
    tetrachloromethane 0.06
    n-pentyl acetate 0.04
    transcutol 1.03
    n-heptanol 0.05
    ethylbenzene 0.03
    MIBK 0.04
    2-propoxyethanol 0.38
    tert-butanol 0.03
    MTBE 0.01
    2-butoxyethanol 0.29
    propionic acid 0.4
    o-xylene 0.09
    formic acid 60.7
    diethyl ether 0.0
    m-xylene 0.07
    p-xylene 0.05
    chlorobenzene 0.03
    dimethyl carbonate 0.09
    n-octane 0.01
    formamide 9.44
    cyclopentanone 0.21
    2-pentanone 0.01
    anisole 0.03
    cyclopentyl methyl ether 0.05
    gamma-butyrolactone 0.59
    1-methoxy-2-propanol 0.12
    pyridine 0.05
    3-pentanone 0.02
    furfural 2.51
    n-dodecane 0.0
    diethylene glycol 3.87
    diisopropyl ether 0.01
    tert-amyl alcohol 0.04
    acetylacetone 0.15
    n-hexadecane 0.0
    acetophenone 0.16
    methyl propionate 0.03
    isopentyl acetate 0.14
    trichloroethylene 0.06
    n-nonanol 0.02
    cyclohexanol 0.06
    benzyl alcohol 0.12
    2-ethylhexanol 0.09
    isooctanol 0.07
    dipropyl ether 0.03
    1,2-dichlorobenzene 0.09
    ethyl lactate 0.3
    propylene carbonate 0.64
    n-methylformamide 0.19
    2-pentanol 0.01
    n-pentane 0.0
    1-propoxy-2-propanol 0.29
    1-methoxy-2-propyl acetate 0.36
    2-(2-methoxypropoxy) propanol 0.97
    mesitylene 0.1
    ε-caprolactone 0.23
    p-cymene 0.14
    epichlorohydrin 0.08
    1,1,1-trichloroethane 0.02
    2-aminoethanol 0.94
    morpholine-4-carbaldehyde 1.32
    sulfolane 14.34
    2,2,4-trimethylpentane 0.01
    2-methyltetrahydrofuran 0.03
    n-hexyl acetate 0.04
    isooctane 0.01
    2-(2-butoxyethoxy)ethanol 0.67
    sec-butyl acetate 0.02
    tert-butyl acetate 0.09
    decalin 0.03
    glycerin 11.93
    diglyme 0.76
    acrylic acid 1.79
    isopropyl myristate 0.03
    n-butyric acid 0.21
    acetyl acetate 0.12
    di(2-ethylhexyl) phthalate 0.34
    ethyl propionate 0.03
    nitromethane 0.59
    1,2-diethoxyethane 0.03
    benzonitrile 0.07
    trioctyl phosphate 0.17
    1-bromopropane 0.0
    gamma-valerolactone 0.61
    n-decanol 0.02
    triethyl phosphate 0.37
    4-methyl-2-pentanol 0.02
    propionitrile 0.01
    vinylene carbonate 0.52
    1,1,2-trichlorotrifluoroethane 3.48
    DMS 0.23
    cumene 0.06
    2-octanol 0.02
    2-hexanone 0.02
    octyl acetate 0.04
    limonene 0.14
    1,2-dimethoxyethane 0.07
    ethyl orthosilicate 0.31
    tributyl phosphate 0.22
    diacetone alcohol 0.45
    N,N-dimethylaniline 0.09
    acrylonitrile 0.03
    aniline 0.06
    1,3-propanediol 0.29
    bromobenzene 0.03
    dibromomethane 0.02
    1,1,2,2-tetrachloroethane 0.07
    2-methyl-cyclohexyl acetate 0.29
    tetrabutyl urea 0.26
    diisobutyl methanol 0.11
    2-phenylethanol 0.24
    styrene 0.02
    dioctyl adipate 0.1
    dimethyl sulfate 1.3
    ethyl butyrate 0.09
    methyl lactate 0.65
    butyl lactate 0.37
    diethyl carbonate 0.12
    propanediol butyl ether 0.62
    triethyl orthoformate 0.18
    p-tert-butyltoluene 0.15
    methyl 4-tert-butylbenzoate 0.78
    morpholine 0.02
    tert-butylamine 0.01
    n-dodecanol 0.02
    dimethoxymethane 0.04
    ethylene carbonate 0.27
    cyrene 4.01
    2-ethoxyethyl acetate 0.1
    2-ethylhexyl acetate 0.12
    1,2,4-trichlorobenzene 0.13
    4-methylpyridine 0.03
    dibutyl ether 0.01
    2,6-dimethyl-4-heptanol 0.11
    DEF 0.06
    dimethyl isosorbide 2.91
    tetrachloroethylene 0.2
    eugenol 0.86
    triacetin 0.35
    span 80 1.04
    1,4-butanediol 0.23
    1,1-dichloroethane 0.0
    2-methyl-1-pentanol 0.03
    methyl formate 0.22
    2-methyl-1-butanol 0.02
    n-decane 0.01
    butyronitrile 0.01
    3,7-dimethyl-1-octanol 0.04
    1-chlorooctane 0.01
    1-chlorotetradecane 0.01
    n-nonane 0.01
    undecane 0.01
    tert-butylcyclohexane 0.02
    cyclooctane 0.02
    cyclopentanol 0.08
    tetrahydropyran 0.01
    tert-amyl methyl ether 0.02
    2,5,8-trioxanonane 1.32
    1-hexene 0.01
    2-isopropoxyethanol 0.1
    2,2,2-trifluoroethanol 4.63
    methyl butyrate 0.04

    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