2-Methyl-3-propylpyrazine

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  • Identifiers

    CAS number
    15986-80-8

    Molecular formula
    C8H12N2

    SMILES
    CCCC1=NC=CN=C1C

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Nutty 76.62%
    Roasted 68.81%
    Earthy 62.72%
    Musty 54.57%
    Cocoa 53.37%
    Hazelnut 53.19%
    Green 49.46%
    Burnt 46.44%
    Potato 46.18%
    Coffee 41.85%

     

    Flavor
    Nutty 76.93%
    Green 66.26%
    Earthy 54.49%
    Roasted 51.57%
    Vegetable 46.68%
    Musty 46.36%
    Hazelnut 46.0%
    Potato 45.74%
    Raw 45.08%
    Pepper 41.57%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.6

    pKa est.
    4.72 (weak acid)

    Molecular weight
    136.19 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point

    • 189.00 to 190.00 °C. @ 760.00 mm Hg

    Flash point

    • 76.86 ˚C est.

  • Synonyms

    • 2-Methyl-3-propylpyrazine
    • 15986-80-8
    • 2-Methyl-3-n-propylpyrazine
    • Pyrazine, 2-methyl-3-propyl-
    • 2-Methyl-3-propyl-pyrazine
    • 2-Propyl-3-methylpyrazine
    • 3-Propyl-2-methylpyrazine
    • 3-Propyl-2-methyl pyrazine
    • EINECS 240-121-8
    • DTXSID8051758
    • XAWKNALRUSOTOY-UHFFFAOYSA-
    • methylpropylpyrazine
    • MFCD00010096
    • 2-methyl-3-propyl pyrazine
    • CHEMBL95176
    • SCHEMBL294405
    • DTXCID1030313
    • CHEBI:193646
    • AKOS005256496
    • AS-76021
    • DB-116863
    • M0841
    • NS00053277
    • D91392
    • 240-121-8

  • Applications

    2-Methyl-3-propylpyrazine (CAS 15986-80-8) is used as an aroma and flavoring ingredient in real-world applications, with primary relevance to the perfumery/fragrance and flavor sectors. It can also function as a fragrance component in cosmetics/personal care products and in household cleaning and air-freshening products; in industrial manufacturing it may be an intermediate in organic synthesis for various chemical products; and as a specialty odorant, it may be incorporated into polymers/plastics to impart or preserve a specific aroma.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 263.41
    methanol 312.74
    isopropanol 183.02
    water 1.89
    ethyl acetate 194.06
    n-propanol 237.51
    acetone 245.66
    n-butanol 206.07
    acetonitrile 253.29
    DMF 447.96
    toluene 220.29
    isobutanol 197.28
    1,4-dioxane 363.53
    methyl acetate 200.92
    THF 448.37
    2-butanone 234.68
    n-pentanol 168.94
    sec-butanol 188.92
    n-hexane 55.48
    ethylene glycol 78.37
    NMP 511.7
    cyclohexane 111.15
    DMSO 455.24
    n-butyl acetate 313.24
    n-octanol 140.41
    chloroform 1361.73
    n-propyl acetate 155.07
    acetic acid 288.25
    dichloromethane 1369.47
    cyclohexanone 481.77
    propylene glycol 83.53
    isopropyl acetate 111.21
    DMAc 365.54
    2-ethoxyethanol 181.56
    isopentanol 169.94
    n-heptane 73.4
    ethyl formate 243.58
    1,2-dichloroethane 611.21
    n-hexanol 259.06
    2-methoxyethanol 277.37
    isobutyl acetate 113.52
    tetrachloromethane 322.41
    n-pentyl acetate 175.67
    transcutol 432.5
    n-heptanol 139.31
    ethylbenzene 131.77
    MIBK 116.85
    2-propoxyethanol 273.39
    tert-butanol 191.04
    MTBE 163.74
    2-butoxyethanol 181.22
    propionic acid 231.62
    o-xylene 161.25
    formic acid 100.5
    diethyl ether 178.89
    m-xylene 148.62
    p-xylene 183.62
    chlorobenzene 451.87
    dimethyl carbonate 93.05
    n-octane 33.7
    formamide 112.44
    cyclopentanone 478.86
    2-pentanone 181.1
    anisole 182.51
    cyclopentyl methyl ether 249.82
    gamma-butyrolactone 549.51
    1-methoxy-2-propanol 187.4
    pyridine 500.94
    3-pentanone 183.17
    furfural 574.22
    n-dodecane 29.5
    diethylene glycol 184.33
    diisopropyl ether 67.12
    tert-amyl alcohol 186.72
    acetylacetone 187.31
    n-hexadecane 33.21
    acetophenone 192.5
    methyl propionate 181.31
    isopentyl acetate 246.12
    trichloroethylene 1155.67
    n-nonanol 117.17
    cyclohexanol 226.76
    benzyl alcohol 175.39
    2-ethylhexanol 194.52
    isooctanol 109.03
    dipropyl ether 186.69
    1,2-dichlorobenzene 427.2
    ethyl lactate 96.25
    propylene carbonate 378.88
    n-methylformamide 240.41
    2-pentanol 123.76
    n-pentane 53.14
    1-propoxy-2-propanol 213.01
    1-methoxy-2-propyl acetate 188.05
    2-(2-methoxypropoxy) propanol 153.33
    mesitylene 107.88
    ε-caprolactone 371.01
    p-cymene 139.7
    epichlorohydrin 575.29
    1,1,1-trichloroethane 640.03
    2-aminoethanol 133.0
    morpholine-4-carbaldehyde 398.76
    sulfolane 700.47
    2,2,4-trimethylpentane 38.12
    2-methyltetrahydrofuran 370.42
    n-hexyl acetate 232.59
    isooctane 25.32
    2-(2-butoxyethoxy)ethanol 190.56
    sec-butyl acetate 95.75
    tert-butyl acetate 118.7
    decalin 57.02
    glycerin 112.04
    diglyme 347.22
    acrylic acid 220.72
    isopropyl myristate 101.71
    n-butyric acid 293.5
    acetyl acetate 133.36
    di(2-ethylhexyl) phthalate 113.82
    ethyl propionate 135.57
    nitromethane 326.6
    1,2-diethoxyethane 214.26
    benzonitrile 361.14
    trioctyl phosphate 87.09
    1-bromopropane 389.9
    gamma-valerolactone 499.72
    n-decanol 92.4
    triethyl phosphate 112.08
    4-methyl-2-pentanol 78.95
    propionitrile 271.71
    vinylene carbonate 404.94
    1,1,2-trichlorotrifluoroethane 392.72
    DMS 161.61
    cumene 107.37
    2-octanol 103.61
    2-hexanone 173.17
    octyl acetate 132.79
    limonene 191.33
    1,2-dimethoxyethane 307.34
    ethyl orthosilicate 105.46
    tributyl phosphate 106.19
    diacetone alcohol 135.29
    N,N-dimethylaniline 155.3
    acrylonitrile 331.8
    aniline 248.16
    1,3-propanediol 163.3
    bromobenzene 528.23
    dibromomethane 912.38
    1,1,2,2-tetrachloroethane 871.65
    2-methyl-cyclohexyl acetate 170.13
    tetrabutyl urea 137.54
    diisobutyl methanol 99.51
    2-phenylethanol 215.41
    styrene 169.85
    dioctyl adipate 142.48
    dimethyl sulfate 158.78
    ethyl butyrate 207.84
    methyl lactate 107.05
    butyl lactate 139.47
    diethyl carbonate 153.48
    propanediol butyl ether 154.25
    triethyl orthoformate 144.05
    p-tert-butyltoluene 118.77
    methyl 4-tert-butylbenzoate 181.22
    morpholine 366.72
    tert-butylamine 151.0
    n-dodecanol 78.01
    dimethoxymethane 222.54
    ethylene carbonate 313.19
    cyrene 159.66
    2-ethoxyethyl acetate 185.7
    2-ethylhexyl acetate 212.26
    1,2,4-trichlorobenzene 446.36
    4-methylpyridine 471.42
    dibutyl ether 175.64
    2,6-dimethyl-4-heptanol 99.51
    DEF 273.23
    dimethyl isosorbide 284.01
    tetrachloroethylene 658.5
    eugenol 179.6
    triacetin 168.41
    span 80 161.27
    1,4-butanediol 94.92
    1,1-dichloroethane 590.35
    2-methyl-1-pentanol 155.82
    methyl formate 218.72
    2-methyl-1-butanol 185.63
    n-decane 43.04
    butyronitrile 300.37
    3,7-dimethyl-1-octanol 124.81
    1-chlorooctane 144.08
    1-chlorotetradecane 66.73
    n-nonane 44.78
    undecane 34.58
    tert-butylcyclohexane 52.23
    cyclooctane 40.64
    cyclopentanol 267.28
    tetrahydropyran 370.7
    tert-amyl methyl ether 138.82
    2,5,8-trioxanonane 249.46
    1-hexene 142.24
    2-isopropoxyethanol 130.97
    2,2,2-trifluoroethanol 105.04
    methyl butyrate 204.21

    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