Kahweofuran

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  • Identifiers

    CAS number
    26693-24-3

    Molecular formula
    C7H8OS

    SMILES
    CC1=C2C(=CO1)CCS2

  • Odor profile

    Fragrance
    Meaty 74.62%
    Roasted 72.13%
    Sulfurous 70.63%
    Savory 41.33%
    Coffee 40.46%
    Burnt 39.42%
    Beefy 38.79%
    Onion 35.82%
    Cooked 33.68%
    Smoky 32.19%

     

    Flavor
    Roasted 66.37%
    Nutty 55.78%
    Coffee 54.83%
    Meaty 47.49%
    Vegetable 42.07%
    Earthy 41.61%
    Roast 41.27%
    Sulfury 39.97%
    Burnt 35.47%
    Potato 33.91%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.9

    pKa est.
    5.35 (weak acid)

    Molecular weight
    140.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderate

    Boiling point est.
    234°C

    Flash point

    • 81.9 ˚C est.

  • Synonyms

    • Kahweofuran
    • 26693-24-3
    • 6-methyl-2,3-dihydrothieno[2,3-c]furan
    • 2,3-dihydro-6-methylthieno[2,3-c]furan
    • 2,3-dihydro-6-methyl-thieno[2,3c]furan
    • Bicyclo[3.3.0]-3-oxa-8-thia-1,4-octadiene, 2-methyl
    • Thieno(2,3-c)furan, 2,3-dihydro-6-methyl-
    • SCHEMBL2081489
    • DTXSID10949512
    • CHEBI:173587
    • 6-methyl-2,3-dihydrothieno[2,3-c]uran
    • 6-methyl-2,3-dihydro-thieno[2,3-c]furan
    • Thieno[2,3-c]furan, 2,3-dihydro-6-methyl
    • 6-METHYL-2H,3H-THIENO[2,3-C]FURAN
    • 4-Methyl-3-oxa-6-thiabicyclo[3.3.0]octa-1,4-diene

  • Applications

    Kahweofuran (CAS 26693-24-3) is a furan-containing compound that is primarily evaluated as an aroma-related ingredient and may be used as a fragrance component or odorant in perfumery and flavor applications; it can serve as an intermediate in organic synthesis for the preparation of more complex molecules; in cosmetics and personal care it may function as a fragrance note; in some household products it could be included as a fragrance additive; in coatings and inks formulations it may be used as a fragrance contributor or processing aid, depending on regulatory and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 374.46
    methanol 488.71
    isopropanol 228.76
    water 15.28
    ethyl acetate 449.59
    n-propanol 297.1
    acetone 593.0
    n-butanol 252.07
    acetonitrile 543.71
    DMF 951.05
    toluene 444.91
    isobutanol 206.79
    1,4-dioxane 1345.17
    methyl acetate 457.16
    THF 1112.33
    2-butanone 420.05
    n-pentanol 207.89
    sec-butanol 188.37
    n-hexane 34.92
    ethylene glycol 185.54
    NMP 816.49
    cyclohexane 89.86
    DMSO 791.54
    n-butyl acetate 264.5
    n-octanol 131.82
    chloroform 1993.81
    n-propyl acetate 276.09
    acetic acid 476.44
    dichloromethane 2036.8
    cyclohexanone 731.57
    propylene glycol 125.61
    isopropyl acetate 279.69
    DMAc 538.08
    2-ethoxyethanol 480.38
    isopentanol 217.66
    n-heptane 43.29
    ethyl formate 377.33
    1,2-dichloroethane 1029.3
    n-hexanol 197.1
    2-methoxyethanol 685.62
    isobutyl acetate 192.52
    tetrachloromethane 378.62
    n-pentyl acetate 237.47
    transcutol 1378.95
    n-heptanol 136.72
    ethylbenzene 151.58
    MIBK 271.39
    2-propoxyethanol 467.48
    tert-butanol 259.16
    MTBE 254.0
    2-butoxyethanol 303.37
    propionic acid 306.49
    o-xylene 210.53
    formic acid 343.33
    diethyl ether 397.52
    m-xylene 258.7
    p-xylene 187.55
    chlorobenzene 702.21
    dimethyl carbonate 288.59
    n-octane 21.41
    formamide 539.32
    cyclopentanone 879.77
    2-pentanone 380.02
    anisole 448.83
    cyclopentyl methyl ether 532.55
    gamma-butyrolactone 1014.83
    1-methoxy-2-propanol 463.69
    pyridine 1056.2
    3-pentanone 322.16
    furfural 1157.21
    n-dodecane 19.97
    diethylene glycol 462.28
    diisopropyl ether 138.92
    tert-amyl alcohol 194.75
    acetylacetone 624.03
    n-hexadecane 22.97
    acetophenone 359.6
    methyl propionate 376.38
    isopentyl acetate 240.63
    trichloroethylene 1835.54
    n-nonanol 121.85
    cyclohexanol 293.93
    benzyl alcohol 310.74
    2-ethylhexanol 128.41
    isooctanol 119.56
    dipropyl ether 208.74
    1,2-dichlorobenzene 578.35
    ethyl lactate 153.29
    propylene carbonate 485.7
    n-methylformamide 596.37
    2-pentanol 164.13
    n-pentane 46.25
    1-propoxy-2-propanol 275.9
    1-methoxy-2-propyl acetate 347.79
    2-(2-methoxypropoxy) propanol 293.13
    mesitylene 164.73
    ε-caprolactone 572.31
    p-cymene 104.51
    epichlorohydrin 1260.25
    1,1,1-trichloroethane 864.67
    2-aminoethanol 258.02
    morpholine-4-carbaldehyde 1101.96
    sulfolane 908.3
    2,2,4-trimethylpentane 28.37
    2-methyltetrahydrofuran 707.03
    n-hexyl acetate 295.39
    isooctane 26.59
    2-(2-butoxyethoxy)ethanol 439.25
    sec-butyl acetate 186.56
    tert-butyl acetate 324.42
    decalin 47.96
    glycerin 247.7
    diglyme 866.76
    acrylic acid 346.54
    isopropyl myristate 142.51
    n-butyric acid 385.07
    acetyl acetate 358.55
    di(2-ethylhexyl) phthalate 135.69
    ethyl propionate 247.78
    nitromethane 1068.77
    1,2-diethoxyethane 444.1
    benzonitrile 506.85
    trioctyl phosphate 99.74
    1-bromopropane 420.45
    gamma-valerolactone 1215.8
    n-decanol 94.76
    triethyl phosphate 145.42
    4-methyl-2-pentanol 122.52
    propionitrile 384.94
    vinylene carbonate 609.7
    1,1,2-trichlorotrifluoroethane 673.34
    DMS 324.29
    cumene 108.25
    2-octanol 98.3
    2-hexanone 251.59
    octyl acetate 168.48
    limonene 138.34
    1,2-dimethoxyethane 722.98
    ethyl orthosilicate 140.94
    tributyl phosphate 126.89
    diacetone alcohol 313.34
    N,N-dimethylaniline 269.08
    acrylonitrile 542.88
    aniline 461.95
    1,3-propanediol 323.73
    bromobenzene 776.8
    dibromomethane 1132.46
    1,1,2,2-tetrachloroethane 1124.46
    2-methyl-cyclohexyl acetate 204.48
    tetrabutyl urea 164.65
    diisobutyl methanol 100.08
    2-phenylethanol 269.67
    styrene 234.26
    dioctyl adipate 196.0
    dimethyl sulfate 416.16
    ethyl butyrate 220.5
    methyl lactate 211.01
    butyl lactate 172.65
    diethyl carbonate 179.67
    propanediol butyl ether 233.99
    triethyl orthoformate 185.43
    p-tert-butyltoluene 101.27
    methyl 4-tert-butylbenzoate 299.63
    morpholine 1071.42
    tert-butylamine 184.4
    n-dodecanol 76.83
    dimethoxymethane 717.9
    ethylene carbonate 510.23
    cyrene 333.56
    2-ethoxyethyl acetate 410.5
    2-ethylhexyl acetate 203.05
    1,2,4-trichlorobenzene 600.73
    4-methylpyridine 818.58
    dibutyl ether 188.5
    2,6-dimethyl-4-heptanol 100.08
    DEF 428.72
    dimethyl isosorbide 540.46
    tetrachloroethylene 854.88
    eugenol 318.42
    triacetin 337.22
    span 80 248.25
    1,4-butanediol 166.39
    1,1-dichloroethane 845.11
    2-methyl-1-pentanol 179.54
    methyl formate 561.44
    2-methyl-1-butanol 196.71
    n-decane 30.72
    butyronitrile 346.19
    3,7-dimethyl-1-octanol 135.37
    1-chlorooctane 118.04
    1-chlorotetradecane 56.11
    n-nonane 29.62
    undecane 23.69
    tert-butylcyclohexane 41.68
    cyclooctane 37.43
    cyclopentanol 328.36
    tetrahydropyran 738.12
    tert-amyl methyl ether 208.36
    2,5,8-trioxanonane 626.31
    1-hexene 106.45
    2-isopropoxyethanol 329.94
    2,2,2-trifluoroethanol 284.69
    methyl butyrate 298.59

    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