L-Selenomethionine

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  • Identifiers

    CAS number
    3211-76-5

    Molecular formula
    C5H11NO2Se

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

    Safety labels

    Acute Toxic
    Acute Toxic

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 39.56%
    Savory 37.19%
    Meaty 36.44%
    Sulfurous 31.95%
    Sweet 28.95%
    Cheesy 26.22%
    Roasted 22.89%
    Cooked 21.66%
    Green 19.37%
    Milky 19.25%

     

    Flavor
    Odorless 40.12%
    Sulfurous 40.1%
    Sulfury 37.69%
    Mild 29.41%
    Roasted 27.3%
    Cooked 25.5%
    Onion 22.57%
    Cabbage 21.79%
    Acidic 21.63%
    Acrid 20.86%

     

  • Properties

    pKa est.
    5.67 (weak acid)

    Molecular weight
    196.12 g/mol

    Melting point expt.

    • 275 °C

    Flash point

    • 117.57 ˚C est.

  • Synonyms

    • L-selenomethionine
    • 3211-76-5
    • Seleno-L-methionine
    • SeMet
    • (2S)-2-amino-4-methylselanylbutanoic acid
    • (2S)-2-amino-4-(methylseleno)butanoic acid
    • CHEBI:30021
    • NSC724226
    • Selenomethionine-L
    • RefChem:1088270
    • (2S)-2-azaniumyl-4-methylselanylbutanoate
    • Selenium-L-methionine
    • L-Selenomethioninum
    • L-(+)-Selenomethionine
    • (S)-2-Amino-4-(methylselanyl)butanoic acid
    • MFCD00037210
    • (S)-2-Amino-4-(methylseleno)butanoic acid
    • (S)-2-Amino-4-(methylseleno)butyric acid
    • (2s)-2-amino-4-(methylselanyl)butanoic acid
    • C5H11NO2Se
    • Butyric acid, 2-amino-4-(methylselenyl)-, L-
    • Butanoic acid, 2-amino-4-(methylseleno)-, (S)-
    • (2S)-2-amino-4-methylselanyl-butanoic acid
    • DTXSID8046824
    • NCGC00181044-01
    • Selenomethionine [USAN]
    • MSE
    • UNII-964MRK2PEL
    • Butanoic acid, 2-amino-4-(methylseleno)-, (2S)-
    • Se-methionine
    • Megavite RX
    • Seleno-DL-methionine;DL-Selenomethionine
    • (2S)-2-Amino-4-(methylseleno)-butanoic acid; L-2-Amino-4-(methylselenyl)-butyric acid; Seleno-L-methionine
    • Methionine, seleno-
    • L-Seleno-L-methionine
    • Seleno-D,L-methionine
    • L(+)-Selenomethionine
    • bmse000169
    • SELENOMETHIONINE, L-
    • SCHEMBL63322
    • SELENOMETHIONINE [MI]
    • L-SelenoMethionine (Standard)
    • SELENOMETHIONINE [HSDB]
    • CHEMBL113178
    • HY-B1000AR
    • orb1689898
    • DTXCID6026824
    • L-SELENOMETHIONINE [FCC]
    • SELENOMETHIONINE [MART.]
    • HY-B1000A
    • SELENOMETHIONINE [USP-RS]
    • SELENOMETHIONINE [WHO-DD]
    • 2-amino-4-(methylseleno)butanoate
    • HMS3264C04
    • Pharmakon1600-01506163
    • 2-Amino-4-(methylselenyl)butyrate
    • Tox21_112692
    • EBC-26177
    • NSC760370
    • s3973
    • AKOS015853989
    • AKOS015889703
    • AC-5676
    • CCG-207973
    • CS-5178
    • DB11142
    • FS09881
    • NSC 760370
    • (S)-2-Amino-4-(methylseleno)butanoate
    • NCGC00181044-04
    • (2S)-2-amino-4-(methylseleno)butanoate
    • (S)-2-amino-4-(methylseleno)-Butanoate
    • CAS-3211-76-5
    • L-2-amino-4-(methylselenyl)-Butyric acid
    • NS00074298
    • S0442
    • (S)-2-amino-4-(methylseleno)-Butanoic acid
    • Seleno-L-methionine, >=98% (TLC), powder
    • C05335
    • F20529
    • AB01563198_01
    • F224390
    • BRD-K74664543-213-01-2
    • Q27096144
    • .ALPHA.-AMINO-.GAMMA.-(METHYLSELENO)BUTYRIC ACID
    • 2905D820-1EFF-4468-93D0-BD1605569F30
    • Selenomethionine, United States Pharmacopeia (USP) Reference Standard
    • 3211-76-5

  • Applications

    L-Selenomethionine is an organic selenium-containing amino acid used primarily as a source of organic selenium in animal nutrition, supporting selenium status in livestock and poultry feeds. In the nutraceutical sector, it is considered as a human dietary supplement. As a biochemical reagent and building block for synthesis, it is employed in studies of selenoprotein biosynthesis and selenium metabolism. It also serves as a chemical intermediate for the synthesis of selenium-containing compounds and selenoamino acid derivatives for specialty applications in chemistry and materials science. Additionally, it may be used as a precursor in the development of specialty nutraceutical or pharmaceutical formulations, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 8.0
    methanol 18.23
    isopropanol 5.23
    water 60.21
    ethyl acetate 1.38
    n-propanol 5.32
    acetone 7.42
    n-butanol 3.91
    acetonitrile 1.57
    DMF 30.03
    toluene 0.67
    isobutanol 4.03
    1,4-dioxane 9.45
    methyl acetate 1.55
    THF 18.47
    2-butanone 2.45
    n-pentanol 4.94
    sec-butanol 2.95
    n-hexane 0.23
    ethylene glycol 31.69
    NMP 78.0
    cyclohexane 0.84
    DMSO 110.16
    n-butyl acetate 4.61
    n-octanol 5.2
    chloroform 0.79
    n-propyl acetate 2.8
    acetic acid 33.67
    dichloromethane 1.01
    cyclohexanone 17.21
    propylene glycol 18.05
    isopropyl acetate 2.1
    DMAc 27.83
    2-ethoxyethanol 22.66
    isopentanol 4.69
    n-heptane 0.89
    ethyl formate 3.49
    1,2-dichloroethane 1.23
    n-hexanol 8.39
    2-methoxyethanol 32.03
    isobutyl acetate 2.77
    tetrachloromethane 0.48
    n-pentyl acetate 5.32
    transcutol 41.64
    n-heptanol 8.88
    ethylbenzene 0.87
    MIBK 4.13
    2-propoxyethanol 27.87
    tert-butanol 9.07
    MTBE 1.59
    2-butoxyethanol 24.88
    propionic acid 11.0
    o-xylene 1.83
    formic acid 54.93
    diethyl ether 0.64
    m-xylene 1.69
    p-xylene 1.39
    chlorobenzene 1.07
    dimethyl carbonate 2.45
    n-octane 0.49
    formamide 43.8
    cyclopentanone 25.13
    2-pentanone 2.95
    anisole 2.7
    cyclopentyl methyl ether 6.06
    gamma-butyrolactone 26.77
    1-methoxy-2-propanol 21.75
    pyridine 4.3
    3-pentanone 1.84
    furfural 30.89
    n-dodecane 0.38
    diethylene glycol 45.92
    diisopropyl ether 0.96
    tert-amyl alcohol 5.72
    acetylacetone 9.67
    n-hexadecane 0.42
    acetophenone 7.57
    methyl propionate 2.09
    isopentyl acetate 5.79
    trichloroethylene 2.32
    n-nonanol 5.36
    cyclohexanol 7.63
    benzyl alcohol 7.95
    2-ethylhexanol 5.86
    isooctanol 7.4
    dipropyl ether 2.76
    1,2-dichlorobenzene 2.08
    ethyl lactate 8.04
    propylene carbonate 12.7
    n-methylformamide 14.0
    2-pentanol 2.47
    n-pentane 0.2
    1-propoxy-2-propanol 19.3
    1-methoxy-2-propyl acetate 10.57
    2-(2-methoxypropoxy) propanol 24.66
    mesitylene 2.07
    ε-caprolactone 15.22
    p-cymene 2.81
    epichlorohydrin 9.93
    1,1,1-trichloroethane 0.88
    2-aminoethanol 28.11
    morpholine-4-carbaldehyde 53.61
    sulfolane 85.33
    2,2,4-trimethylpentane 0.28
    2-methyltetrahydrofuran 6.9
    n-hexyl acetate 5.9
    isooctane 0.34
    2-(2-butoxyethoxy)ethanol 31.05
    sec-butyl acetate 2.14
    tert-butyl acetate 4.46
    decalin 0.62
    glycerin 47.19
    diglyme 38.28
    acrylic acid 17.41
    isopropyl myristate 3.63
    n-butyric acid 9.76
    acetyl acetate 2.78
    di(2-ethylhexyl) phthalate 9.97
    ethyl propionate 1.88
    nitromethane 19.6
    1,2-diethoxyethane 5.04
    benzonitrile 4.18
    trioctyl phosphate 7.69
    1-bromopropane 0.34
    gamma-valerolactone 41.05
    n-decanol 4.31
    triethyl phosphate 5.03
    4-methyl-2-pentanol 3.23
    propionitrile 1.09
    vinylene carbonate 10.04
    1,1,2-trichlorotrifluoroethane 26.41
    DMS 5.09
    cumene 1.44
    2-octanol 4.21
    2-hexanone 3.68
    octyl acetate 5.08
    limonene 3.64
    1,2-dimethoxyethane 14.09
    ethyl orthosilicate 4.62
    tributyl phosphate 6.06
    diacetone alcohol 16.8
    N,N-dimethylaniline 4.9
    acrylonitrile 2.56
    aniline 2.91
    1,3-propanediol 25.01
    bromobenzene 0.85
    dibromomethane 0.69
    1,1,2,2-tetrachloroethane 2.94
    2-methyl-cyclohexyl acetate 9.33
    tetrabutyl urea 11.45
    diisobutyl methanol 4.87
    2-phenylethanol 10.81
    styrene 0.7
    dioctyl adipate 8.29
    dimethyl sulfate 11.0
    ethyl butyrate 3.97
    methyl lactate 10.85
    butyl lactate 12.58
    diethyl carbonate 2.92
    propanediol butyl ether 27.07
    triethyl orthoformate 4.82
    p-tert-butyltoluene 3.11
    methyl 4-tert-butylbenzoate 18.99
    morpholine 12.13
    tert-butylamine 3.45
    n-dodecanol 3.5
    dimethoxymethane 7.77
    ethylene carbonate 7.34
    cyrene 46.57
    2-ethoxyethyl acetate 7.47
    2-ethylhexyl acetate 4.18
    1,2,4-trichlorobenzene 3.28
    4-methylpyridine 3.03
    dibutyl ether 1.96
    2,6-dimethyl-4-heptanol 4.87
    DEF 6.49
    dimethyl isosorbide 41.38
    tetrachloroethylene 2.95
    eugenol 23.24
    triacetin 11.77
    span 80 30.27
    1,4-butanediol 17.76
    1,1-dichloroethane 0.5
    2-methyl-1-pentanol 4.79
    methyl formate 9.79
    2-methyl-1-butanol 3.58
    n-decane 0.5
    butyronitrile 1.31
    3,7-dimethyl-1-octanol 5.66
    1-chlorooctane 1.27
    1-chlorotetradecane 0.84
    n-nonane 0.46
    undecane 0.42
    tert-butylcyclohexane 0.54
    cyclooctane 0.58
    cyclopentanol 13.69
    tetrahydropyran 3.56
    tert-amyl methyl ether 1.67
    2,5,8-trioxanonane 39.43
    1-hexene 0.43
    2-isopropoxyethanol 15.24
    2,2,2-trifluoroethanol 16.88
    methyl butyrate 3.34

    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