2-Methyl-3-propoxypyrazine

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  • Identifiers

    CAS number
    144669-14-7

    Molecular formula
    C8H12N2O

    SMILES
    CCCOC1=NC=CN=C1C

    Safety labels

  • Odor profile

    Fragrance
    Nutty 65.73%
    Earthy 63.31%
    Roasted 54.42%
    Green 45.72%
    Hazelnut 40.08%
    Musty 38.02%
    Cocoa 37.7%
    Potato 37.45%
    Sweet 36.19%
    Almond 35.83%

     

    Flavor
    Earthy 44.96%
    Nutty 44.95%
    Sweet 38.45%
    Potato 35.29%
    Musty 33.88%
    Roasted 33.64%
    Coffee 32.81%
    Caramel 31.32%
    Cocoa 28.18%
    Burnt 27.12%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    2.3

    pKa est.
    4.49 (weak acid)

    Molecular weight
    152.19 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderate

    Boiling point est.
    233°C

    Flash point

    • 91.75 ˚C est.

  • Synonyms

    • 2-methyl-3-propoxypyrazine
    • 144669-14-7
    • OWZNPFICGYXBFG-UHFFFAOYSA-
    • AKOS006271614
    • DB-116862
    • H51620
    • InChI=1/C8H12N2O/c1-3-6-11-8-7(2)9-4-5-10-8/h4-5H,3,6H2,1-2H3
    • 144669-14-7

  • Applications

    2-Methyl-3-propoxypyrazine (CAS 144669-14-7) is commonly used as an odorant and fragrance ingredient in perfumery and personal care, where it contributes specific aroma notes, subject to local regulations and formulation limits; it may serve as a flavor/aroma additive in selected flavor formulations, depending on regulatory approvals; in household products it functions as a fragrance component in cleaners, detergents, and air fresheners; in industrial manufacturing it is often evaluated as an intermediate for the synthesis of other pyrazine derivatives and related aroma compounds; it may also be used as a scent additive in coatings and inks where fragrance is desired.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 789.38
    methanol 1291.83
    isopropanol 481.63
    water 6.74
    ethyl acetate 579.15
    n-propanol 590.37
    acetone 675.05
    n-butanol 544.08
    acetonitrile 780.1
    DMF 848.32
    toluene 378.97
    isobutanol 462.76
    1,4-dioxane 705.1
    methyl acetate 530.15
    THF 874.01
    2-butanone 548.7
    n-pentanol 511.83
    sec-butanol 485.84
    n-hexane 76.39
    ethylene glycol 197.26
    NMP 700.91
    cyclohexane 160.46
    DMSO 981.98
    n-butyl acetate 710.23
    n-octanol 247.45
    chloroform 2748.63
    n-propyl acetate 451.4
    acetic acid 1413.33
    dichloromethane 3152.97
    cyclohexanone 827.51
    propylene glycol 179.28
    isopropyl acetate 302.11
    DMAc 716.74
    2-ethoxyethanol 590.37
    isopentanol 440.92
    n-heptane 78.64
    ethyl formate 753.49
    1,2-dichloroethane 1276.69
    n-hexanol 452.11
    2-methoxyethanol 823.02
    isobutyl acetate 259.4
    tetrachloromethane 449.82
    n-pentyl acetate 360.92
    transcutol 1018.17
    n-heptanol 240.27
    ethylbenzene 235.29
    MIBK 231.4
    2-propoxyethanol 566.93
    tert-butanol 489.48
    MTBE 391.42
    2-butoxyethanol 383.4
    propionic acid 583.37
    o-xylene 257.08
    formic acid 604.56
    diethyl ether 423.77
    m-xylene 227.14
    p-xylene 365.66
    chlorobenzene 757.07
    dimethyl carbonate 204.27
    n-octane 42.01
    formamide 661.43
    cyclopentanone 741.01
    2-pentanone 412.65
    anisole 371.18
    cyclopentyl methyl ether 398.14
    gamma-butyrolactone 1003.45
    1-methoxy-2-propanol 435.09
    pyridine 1117.55
    3-pentanone 343.84
    furfural 1272.77
    n-dodecane 38.33
    diethylene glycol 386.61
    diisopropyl ether 116.95
    tert-amyl alcohol 475.84
    acetylacetone 427.82
    n-hexadecane 42.52
    acetophenone 395.83
    methyl propionate 423.99
    isopentyl acetate 543.33
    trichloroethylene 2588.84
    n-nonanol 205.16
    cyclohexanol 475.09
    benzyl alcohol 416.17
    2-ethylhexanol 312.12
    isooctanol 185.36
    dipropyl ether 277.23
    1,2-dichlorobenzene 659.82
    ethyl lactate 206.54
    propylene carbonate 729.04
    n-methylformamide 676.79
    2-pentanol 321.84
    n-pentane 87.58
    1-propoxy-2-propanol 388.05
    1-methoxy-2-propyl acetate 345.74
    2-(2-methoxypropoxy) propanol 285.74
    mesitylene 145.23
    ε-caprolactone 731.18
    p-cymene 194.72
    epichlorohydrin 1196.14
    1,1,1-trichloroethane 1041.52
    2-aminoethanol 351.68
    morpholine-4-carbaldehyde 679.15
    sulfolane 1001.13
    2,2,4-trimethylpentane 58.56
    2-methyltetrahydrofuran 725.49
    n-hexyl acetate 459.39
    isooctane 31.25
    2-(2-butoxyethoxy)ethanol 378.44
    sec-butyl acetate 246.29
    tert-butyl acetate 253.06
    decalin 75.64
    glycerin 252.62
    diglyme 729.38
    acrylic acid 589.94
    isopropyl myristate 165.4
    n-butyric acid 883.62
    acetyl acetate 417.06
    di(2-ethylhexyl) phthalate 194.4
    ethyl propionate 347.38
    nitromethane 1352.8
    1,2-diethoxyethane 481.84
    benzonitrile 835.79
    trioctyl phosphate 144.83
    1-bromopropane 748.73
    gamma-valerolactone 947.78
    n-decanol 153.5
    triethyl phosphate 191.77
    4-methyl-2-pentanol 165.86
    propionitrile 688.53
    vinylene carbonate 796.3
    1,1,2-trichlorotrifluoroethane 827.63
    DMS 295.37
    cumene 173.16
    2-octanol 178.93
    2-hexanone 388.55
    octyl acetate 227.97
    limonene 262.68
    1,2-dimethoxyethane 889.07
    ethyl orthosilicate 181.02
    tributyl phosphate 193.76
    diacetone alcohol 266.89
    N,N-dimethylaniline 266.76
    acrylonitrile 883.43
    aniline 479.36
    1,3-propanediol 489.42
    bromobenzene 883.51
    dibromomethane 1874.43
    1,1,2,2-tetrachloroethane 1676.27
    2-methyl-cyclohexyl acetate 302.35
    tetrabutyl urea 221.12
    diisobutyl methanol 154.46
    2-phenylethanol 394.86
    styrene 333.35
    dioctyl adipate 260.31
    dimethyl sulfate 288.92
    ethyl butyrate 474.61
    methyl lactate 212.97
    butyl lactate 263.57
    diethyl carbonate 360.87
    propanediol butyl ether 299.47
    triethyl orthoformate 298.66
    p-tert-butyltoluene 160.03
    methyl 4-tert-butylbenzoate 288.54
    morpholine 779.74
    tert-butylamine 350.76
    n-dodecanol 122.19
    dimethoxymethane 501.3
    ethylene carbonate 646.79
    cyrene 266.39
    2-ethoxyethyl acetate 388.09
    2-ethylhexyl acetate 425.48
    1,2,4-trichlorobenzene 656.47
    4-methylpyridine 978.26
    dibutyl ether 306.79
    2,6-dimethyl-4-heptanol 154.46
    DEF 593.51
    dimethyl isosorbide 441.11
    tetrachloroethylene 1282.34
    eugenol 322.12
    triacetin 320.97
    span 80 271.72
    1,4-butanediol 279.71
    1,1-dichloroethane 1169.05
    2-methyl-1-pentanol 417.93
    methyl formate 624.67
    2-methyl-1-butanol 462.04
    n-decane 57.48
    butyronitrile 860.04
    3,7-dimethyl-1-octanol 220.58
    1-chlorooctane 205.62
    1-chlorotetradecane 84.47
    n-nonane 58.12
    undecane 45.55
    tert-butylcyclohexane 62.84
    cyclooctane 48.31
    cyclopentanol 508.15
    tetrahydropyran 731.96
    tert-amyl methyl ether 308.34
    2,5,8-trioxanonane 478.85
    1-hexene 262.92
    2-isopropoxyethanol 353.83
    2,2,2-trifluoroethanol 377.9
    methyl butyrate 539.98

    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