2,5-Dimethyl-3,6-dipropylpyrazine

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  • Identifiers

    CAS number
    40790-33-8

    Molecular formula
    C12H20N2

    SMILES
    CCCC1=C(N=C(C(=N1)C)CCC)C

    Safety labels

  • Odor profile

    Fragrance
    Nutty 49.27%
    Earthy 47.74%
    Burnt 45.97%
    Roasted 42.29%
    Musty 40.15%
    Hazelnut 34.4%
    Sweet 33.96%
    Cocoa 33.24%
    Fruity 30.03%
    Chocolate 27.48%

     

    Flavor
    Earthy 51.05%
    Nutty 46.52%
    Roasted 44.81%
    Musty 42.2%
    Meaty 38.56%
    Green 38.26%
    Burnt 36.64%
    Hazelnut 36.08%
    Pepper 35.36%
    Potato 34.78%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    3.0

    pKa est.
    5.82 (weak acid)

    Molecular weight
    192.3 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    258°C

    Flash point

    • 99.84 ˚C est.

  • Synonyms

    • 2,5-Dimethyl-3,6-dipropylpyrazine
    • 40790-33-8
    • DTXSID20344377
    • RefChem:247579
    • DTXCID80295452
    • 3,6-Dipropyl-2,5-dimethylpyrazine
    • SCHEMBL11329592
    • 2,5-dimethyl-3,6-dipropyl-pyrazine
    • 2,5-Dimethyl-3,6-dipropylpyrazine #
    • 40790-33-8

  • Applications

    2,5-Dimethyl-3,6-dipropylpyrazine (CAS 40790-33-8) is primarily utilized as an odorant in perfumery and as a flavoring note in food processing; it is also employed in cosmetics and personal care as a fragrance ingredient, and in household and cleaning products to contribute to overall scent. Additionally, it can serve as a chemical intermediate in the synthesis of other pyrazine- and aroma-related compounds for research and development. It may be considered as a precursor for polymer- or plastics-related materials where odor or aroma features are relevant, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 765.55
    methanol 658.63
    isopropanol 719.47
    water 0.44
    ethyl acetate 1442.92
    n-propanol 840.93
    acetone 1517.29
    n-butanol 992.82
    acetonitrile 849.25
    DMF 1800.76
    toluene 1387.56
    isobutanol 872.79
    1,4-dioxane 1929.62
    methyl acetate 1098.08
    THF 2944.48
    2-butanone 1389.67
    n-pentanol 805.44
    sec-butanol 913.22
    n-hexane 847.43
    ethylene glycol 97.26
    NMP 1916.71
    cyclohexane 1180.61
    DMSO 1094.5
    n-butyl acetate 2117.07
    n-octanol 781.89
    chloroform 5618.99
    n-propyl acetate 1049.6
    acetic acid 710.58
    dichloromethane 4732.84
    cyclohexanone 2939.94
    propylene glycol 187.2
    isopropyl acetate 1012.06
    DMAc 1521.67
    2-ethoxyethanol 648.07
    isopentanol 961.01
    n-heptane 559.89
    ethyl formate 996.74
    1,2-dichloroethane 2873.27
    n-hexanol 1358.62
    2-methoxyethanol 923.61
    isobutyl acetate 846.08
    tetrachloromethane 1333.25
    n-pentyl acetate 1245.93
    transcutol 1517.35
    n-heptanol 700.9
    ethylbenzene 912.4
    MIBK 882.98
    2-propoxyethanol 1142.96
    tert-butanol 844.5
    MTBE 1385.63
    2-butoxyethanol 753.16
    propionic acid 657.68
    o-xylene 893.36
    formic acid 147.19
    diethyl ether 1591.88
    m-xylene 952.45
    p-xylene 1230.95
    chlorobenzene 2060.03
    dimethyl carbonate 529.69
    n-octane 294.56
    formamide 201.16
    cyclopentanone 2653.0
    2-pentanone 1342.0
    anisole 955.47
    cyclopentyl methyl ether 1819.24
    gamma-butyrolactone 2540.31
    1-methoxy-2-propanol 788.25
    pyridine 2137.33
    3-pentanone 1216.86
    furfural 1902.74
    n-dodecane 195.8
    diethylene glycol 482.55
    diisopropyl ether 630.75
    tert-amyl alcohol 936.85
    acetylacetone 1377.64
    n-hexadecane 230.62
    acetophenone 935.27
    methyl propionate 1094.65
    isopentyl acetate 1804.8
    trichloroethylene 4946.41
    n-nonanol 655.74
    cyclohexanol 1329.55
    benzyl alcohol 750.22
    2-ethylhexanol 1076.58
    isooctanol 587.05
    dipropyl ether 1264.98
    1,2-dichlorobenzene 1777.41
    ethyl lactate 392.01
    propylene carbonate 1713.91
    n-methylformamide 667.18
    2-pentanol 800.48
    n-pentane 550.85
    1-propoxy-2-propanol 984.73
    1-methoxy-2-propyl acetate 1114.88
    2-(2-methoxypropoxy) propanol 578.47
    mesitylene 661.75
    ε-caprolactone 2020.2
    p-cymene 681.3
    epichlorohydrin 2556.93
    1,1,1-trichloroethane 2965.93
    2-aminoethanol 239.76
    morpholine-4-carbaldehyde 1517.31
    sulfolane 2412.95
    2,2,4-trimethylpentane 282.68
    2-methyltetrahydrofuran 2329.34
    n-hexyl acetate 1551.85
    isooctane 194.77
    2-(2-butoxyethoxy)ethanol 733.74
    sec-butyl acetate 737.05
    tert-butyl acetate 894.45
    decalin 498.76
    glycerin 220.02
    diglyme 1363.0
    acrylic acid 545.35
    isopropyl myristate 603.68
    n-butyric acid 1230.86
    acetyl acetate 970.13
    di(2-ethylhexyl) phthalate 483.09
    ethyl propionate 936.84
    nitromethane 1031.69
    1,2-diethoxyethane 1272.57
    benzonitrile 1359.01
    trioctyl phosphate 414.49
    1-bromopropane 2151.88
    gamma-valerolactone 2418.52
    n-decanol 489.38
    triethyl phosphate 522.98
    4-methyl-2-pentanol 494.07
    propionitrile 1013.24
    vinylene carbonate 1525.01
    1,1,2-trichlorotrifluoroethane 1282.35
    DMS 950.65
    cumene 625.46
    2-octanol 647.41
    2-hexanone 1150.42
    octyl acetate 743.52
    limonene 1005.8
    1,2-dimethoxyethane 1498.84
    ethyl orthosilicate 527.38
    tributyl phosphate 525.42
    diacetone alcohol 681.51
    N,N-dimethylaniline 786.94
    acrylonitrile 1037.37
    aniline 1035.78
    1,3-propanediol 462.12
    bromobenzene 2583.68
    dibromomethane 3577.08
    1,1,2,2-tetrachloroethane 4242.91
    2-methyl-cyclohexyl acetate 893.7
    tetrabutyl urea 641.16
    diisobutyl methanol 512.65
    2-phenylethanol 957.88
    styrene 1079.47
    dioctyl adipate 745.85
    dimethyl sulfate 699.79
    ethyl butyrate 1155.95
    methyl lactate 370.82
    butyl lactate 717.63
    diethyl carbonate 779.52
    propanediol butyl ether 604.11
    triethyl orthoformate 780.35
    p-tert-butyltoluene 629.08
    methyl 4-tert-butylbenzoate 782.66
    morpholine 1853.79
    tert-butylamine 757.02
    n-dodecanol 389.91
    dimethoxymethane 1228.35
    ethylene carbonate 1355.88
    cyrene 577.48
    2-ethoxyethyl acetate 1080.11
    2-ethylhexyl acetate 1583.47
    1,2,4-trichlorobenzene 1792.22
    4-methylpyridine 2348.47
    dibutyl ether 1268.91
    2,6-dimethyl-4-heptanol 512.65
    DEF 1587.19
    dimethyl isosorbide 1118.49
    tetrachloroethylene 2937.26
    eugenol 704.11
    triacetin 830.73
    span 80 651.0
    1,4-butanediol 259.1
    1,1-dichloroethane 2885.53
    2-methyl-1-pentanol 861.67
    methyl formate 696.24
    2-methyl-1-butanol 1000.05
    n-decane 336.56
    butyronitrile 1417.58
    3,7-dimethyl-1-octanol 683.49
    1-chlorooctane 964.24
    1-chlorotetradecane 380.11
    n-nonane 380.77
    undecane 248.6
    tert-butylcyclohexane 418.73
    cyclooctane 465.36
    cyclopentanol 1184.25
    tetrahydropyran 2613.18
    tert-amyl methyl ether 1095.41
    2,5,8-trioxanonane 881.65
    1-hexene 1479.1
    2-isopropoxyethanol 545.3
    2,2,2-trifluoroethanol 254.95
    methyl butyrate 1291.58

    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