5-Ethyl-2,3-dimethylpyrazine

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  • Identifiers

    CAS number
    15707-34-3

    Molecular formula
    C8H12N2

    SMILES
    CCC1=CN=C(C(=N1)C)C

    Safety labels

    Irritant
    Irritant

    Retention indicies (RI)

    • DB5: 1084.0
    • Carbowax: 1403.0

  • Odor profile

    Nutty 84.97%
    Roasted 79.8%
    Cocoa 71.06%
    Earthy 65.04%
    Hazelnut 64.93%
    Musty 62.5%
    Burnt 59.23%
    Coffee 58.77%
    Chocolate 57.42%
    Potato 56.5%

    Scent© AI

  • Properties

    XLogP3-AA
    1.4

    Molecular weight
    136.19 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point

    • 190.00 to 191.00 °C. @ 760.00 mm Hg

    Flash point est.
    68.3 ˚C

    Solubility expt.

    • Practically insoluble to insoluble in water
    • Soluble (in ethanol)

  • Synonyms

    • 5-Ethyl-2,3-dimethylpyrazine
    • 15707-34-3
    • 2,3-DIMETHYL-5-ETHYLPYRAZINE
    • 2,3-dimethyl-6-ethylpyrazine
    • ethyl dimethyl pyrazine
    • Pyrazine, 5-ethyl-2,3-dimethyl-
    • 2-ethyl-5,6-dimethylpyrazine
    • FEMA No. 4434
    • UNII-6496XCH56Q
    • 6496XCH56Q
    • 5,6-Dimethyl-2-ethylpyrazine
    • 6-Ethyl-2,3-dimethylpyrazine
    • DTXSID10166207
    • Pyrazine, 6-ethyl-2,3-dimethyl
    • Pyrazine, ethyldimethyl-
    • ethyldimethylpyrazine
    • MFCD04038059
    • CHEMBL94736
    • SCHEMBL162396
    • DTXCID8088698
    • 2,3-Dimethyl-5-Ethyl Pyrazine
    • 5-Ethyl-2,3-dimethylpyrazine #
    • CHEBI:193641
    • AKOS006280518
    • DS-5245
    • DB-043340
    • CS-0152500
    • E0828
    • NS00113836
    • O11425
    • 5-Ethyl-2,3-dimethylpyrazine, analytical standard
    • Q27263730
    • 639-047-2

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 371.52
    methanol 455.62
    isopropanol 276.14
    water 4.76
    ethyl acetate 265.99
    n-propanol 374.6
    acetone 299.88
    n-butanol 315.51
    acetonitrile 308.16
    DMF 477.89
    toluene 312.33
    isobutanol 293.81
    1,4-dioxane 503.05
    methyl acetate 299.25
    THF 611.6
    2-butanone 364.76
    n-pentanol 252.79
    sec-butanol 320.43
    n-hexane 118.14
    ethylene glycol 88.16
    NMP 535.22
    cyclohexane 164.27
    DMSO 383.38
    n-butyl acetate 352.55
    n-octanol 209.77
    chloroform 1701.39
    n-propyl acetate 208.18
    acetic acid 265.87
    dichloromethane 1614.35
    cyclohexanone 558.68
    propylene glycol 105.83
    isopropyl acetate 171.68
    DMAc 481.87
    2-ethoxyethanol 251.92
    isopentanol 247.29
    n-heptane 105.58
    ethyl formate 317.07
    1,2-dichloroethane 729.94
    n-hexanol 305.84
    2-methoxyethanol 371.43
    isobutyl acetate 159.81
    tetrachloromethane 485.85
    n-pentyl acetate 248.2
    transcutol 435.32
    n-heptanol 196.46
    ethylbenzene 223.02
    MIBK 172.64
    2-propoxyethanol 315.6
    tert-butanol 273.56
    MTBE 283.27
    2-butoxyethanol 244.89
    propionic acid 278.19
    o-xylene 251.86
    formic acid 116.75
    diethyl ether 295.01
    m-xylene 208.54
    p-xylene 331.71
    chlorobenzene 488.44
    dimethyl carbonate 127.06
    n-octane 60.3
    formamide 139.72
    cyclopentanone 574.96
    2-pentanone 260.02
    anisole 277.13
    cyclopentyl methyl ether 337.43
    gamma-butyrolactone 608.14
    1-methoxy-2-propanol 251.53
    pyridine 603.01
    3-pentanone 266.32
    furfural 640.22
    n-dodecane 50.21
    diethylene glycol 193.34
    diisopropyl ether 113.24
    tert-amyl alcohol 299.79
    acetylacetone 242.59
    n-hexadecane 56.24
    acetophenone 274.22
    methyl propionate 244.84
    isopentyl acetate 302.91
    trichloroethylene 1313.05
    n-nonanol 172.47
    cyclohexanol 294.79
    benzyl alcohol 244.12
    2-ethylhexanol 223.67
    isooctanol 154.9
    dipropyl ether 239.13
    1,2-dichlorobenzene 484.15
    ethyl lactate 124.13
    propylene carbonate 403.16
    n-methylformamide 278.14
    2-pentanol 208.16
    n-pentane 105.1
    1-propoxy-2-propanol 247.99
    1-methoxy-2-propyl acetate 224.26
    2-(2-methoxypropoxy) propanol 190.63
    mesitylene 148.72
    ε-caprolactone 449.08
    p-cymene 199.73
    epichlorohydrin 670.53
    1,1,1-trichloroethane 770.73
    2-aminoethanol 168.01
    morpholine-4-carbaldehyde 452.33
    sulfolane 676.56
    2,2,4-trimethylpentane 69.83
    2-methyltetrahydrofuran 519.41
    n-hexyl acetate 324.07
    isooctane 40.21
    2-(2-butoxyethoxy)ethanol 233.1
    sec-butyl acetate 148.37
    tert-butyl acetate 174.2
    decalin 90.87
    glycerin 122.02
    diglyme 431.54
    acrylic acid 238.2
    isopropyl myristate 147.1
    n-butyric acid 330.4
    acetyl acetate 193.62
    di(2-ethylhexyl) phthalate 144.09
    ethyl propionate 195.88
    nitromethane 340.93
    1,2-diethoxyethane 269.78
    benzonitrile 413.84
    trioctyl phosphate 114.31
    1-bromopropane 524.84
    gamma-valerolactone 580.46
    n-decanol 134.93
    triethyl phosphate 148.97
    4-methyl-2-pentanol 120.26
    propionitrile 334.77
    vinylene carbonate 445.53
    1,1,2-trichlorotrifluoroethane 415.67
    DMS 217.67
    cumene 179.42
    2-octanol 162.57
    2-hexanone 245.61
    octyl acetate 185.35
    limonene 244.27
    1,2-dimethoxyethane 427.31
    ethyl orthosilicate 142.01
    tributyl phosphate 139.43
    diacetone alcohol 179.4
    N,N-dimethylaniline 244.65
    acrylonitrile 379.29
    aniline 297.3
    1,3-propanediol 217.1
    bromobenzene 579.85
    dibromomethane 1105.83
    1,1,2,2-tetrachloroethane 1013.52
    2-methyl-cyclohexyl acetate 223.43
    tetrabutyl urea 171.75
    diisobutyl methanol 124.75
    2-phenylethanol 268.33
    styrene 261.02
    dioctyl adipate 190.17
    dimethyl sulfate 187.25
    ethyl butyrate 263.59
    methyl lactate 129.12
    butyl lactate 177.39
    diethyl carbonate 205.63
    propanediol butyl ether 194.56
    triethyl orthoformate 190.68
    p-tert-butyltoluene 171.8
    methyl 4-tert-butylbenzoate 245.36
    morpholine 459.8
    tert-butylamine 225.33
    n-dodecanol 112.88
    dimethoxymethane 310.59
    ethylene carbonate 347.12
    cyrene 199.16
    2-ethoxyethyl acetate 247.36
    2-ethylhexyl acetate 269.14
    1,2,4-trichlorobenzene 522.39
    4-methylpyridine 575.06
    dibutyl ether 259.52
    2,6-dimethyl-4-heptanol 124.75
    DEF 357.5
    dimethyl isosorbide 340.57
    tetrachloroethylene 765.73
    eugenol 228.72
    triacetin 229.99
    span 80 198.54
    1,4-butanediol 121.65
    1,1-dichloroethane 752.53
    2-methyl-1-pentanol 231.04
    methyl formate 249.32
    2-methyl-1-butanol 278.9
    n-decane 77.57
    butyronitrile 387.26
    3,7-dimethyl-1-octanol 182.78
    1-chlorooctane 212.25
    1-chlorotetradecane 99.62
    n-nonane 81.22
    undecane 60.59
    tert-butylcyclohexane 88.49
    cyclooctane 63.93
    cyclopentanol 363.13
    tetrahydropyran 491.95
    tert-amyl methyl ether 252.96
    2,5,8-trioxanonane 302.07
    1-hexene 257.92
    2-isopropoxyethanol 180.41
    2,2,2-trifluoroethanol 126.07
    methyl butyrate 281.1

    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

Botanical

Name CAS Botanical Proportion
Chicory root, roasted 2 68650-43-1 Cichorium intybus L., fam. Asteraceae (Compositae) 2.46%
Chicory root, roasted 1a 68650-43-1 Cichorium intybus L., fam. Asteraceae (Compositae) 0.02%
Chicory root, roasted 1b 68650-43-1 Cichorium intybus L., fam. Asteraceae (Compositae) 0.01%