(Z)-2-(2-Butenyl)furan

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    78405-56-8

    SMILES
    C\C=C/Cc1occc1

  • Odor profile

    Fragrance
    Green 77.56%
    Vegetable 43.15%
    Spicy 42.75%
    Fatty 42.18%
    Herbal 40.46%
    Nutty 39.73%
    Fruity 36.83%
    Sweet 35.25%
    Earthy 33.63%
    Floral 31.28%

     

    Flavor
    Green 66.05%
    Spicy 38.49%
    Vegetable 32.53%
    Fatty 29.13%
    Herbal 28.33%
    Spice 27.51%
    Metallic 27.21%
    Oily 27.14%
    Nutty 26.93%
    Sweet 24.97%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    6.51 (neutral)

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Very fast

    Boiling point est.
    159°C

    Flash point

    • 37.85 ˚C est.

  • Applications

    (Z)-2-(2-Butenyl)furan (CAS 78405-56-8) is used primarily as a heteroaromatic building block in synthesis: a convenient diene for Diels–Alder reactions, a handle for diversification via hydroboration–oxidation/epoxidation/ozonolysis on the butenyl double bond, and a substrate for olefin metathesis and thiol–ene functionalization; it is exploited as an intermediate in pharmaceutical and agrochemical discovery, a precursor to tetrahydrofuran/γ-lactone/polycyclic motifs, a reference standard in flavor–aroma analytical chemistry (GC–MS) and Maillard product studies, and a furan-bearing model molecule for reversible Diels–Alder polymer networks and other dynamic covalent materials.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1043.12
    methanol 794.51
    isopropanol 797.86
    water 2.73
    ethyl acetate 393.92
    n-propanol 779.88
    acetone 461.7
    n-butanol 735.5
    acetonitrile 565.64
    DMF 854.86
    toluene 451.95
    isobutanol 620.65
    1,4-dioxane 967.6
    methyl acetate 444.15
    THF 681.9
    2-butanone 465.14
    n-pentanol 481.89
    sec-butanol 743.36
    n-hexane 147.42
    ethylene glycol 321.78
    NMP 473.88
    cyclohexane 276.32
    DMSO 1076.64
    n-butyl acetate 303.26
    n-octanol 320.91
    chloroform 1700.88
    n-propyl acetate 191.31
    acetic acid 440.93
    dichloromethane 1364.81
    cyclohexanone 474.42
    propylene glycol 568.52
    isopropyl acetate 184.56
    DMAc 682.47
    2-ethoxyethanol 495.7
    isopentanol 510.86
    n-heptane 168.63
    ethyl formate 258.17
    1,2-dichloroethane 619.86
    n-hexanol 611.48
    2-methoxyethanol 779.77
    isobutyl acetate 130.56
    tetrachloromethane 273.27
    n-pentyl acetate 163.54
    transcutol 1306.19
    n-heptanol 249.21
    ethylbenzene 220.03
    MIBK 200.08
    2-propoxyethanol 657.61
    tert-butanol 789.48
    MTBE 451.74
    2-butoxyethanol 326.38
    propionic acid 467.82
    o-xylene 265.89
    formic acid 133.36
    diethyl ether 498.36
    m-xylene 249.82
    p-xylene 245.36
    chlorobenzene 376.18
    dimethyl carbonate 163.72
    n-octane 56.92
    formamide 203.65
    cyclopentanone 407.56
    2-pentanone 330.25
    anisole 373.12
    cyclopentyl methyl ether 388.48
    gamma-butyrolactone 392.9
    1-methoxy-2-propanol 621.5
    pyridine 754.81
    3-pentanone 292.5
    furfural 437.17
    n-dodecane 56.75
    diethylene glycol 514.24
    diisopropyl ether 130.49
    tert-amyl alcohol 629.95
    acetylacetone 291.05
    n-hexadecane 60.17
    acetophenone 272.61
    methyl propionate 356.67
    isopentyl acetate 237.93
    trichloroethylene 1009.2
    n-nonanol 260.67
    cyclohexanol 605.74
    benzyl alcohol 353.91
    2-ethylhexanol 329.27
    isooctanol 179.86
    dipropyl ether 360.88
    1,2-dichlorobenzene 300.55
    ethyl lactate 162.58
    propylene carbonate 267.02
    n-methylformamide 401.05
    2-pentanol 466.1
    n-pentane 180.52
    1-propoxy-2-propanol 491.54
    1-methoxy-2-propyl acetate 280.63
    2-(2-methoxypropoxy) propanol 381.46
    mesitylene 143.29
    ε-caprolactone 363.81
    p-cymene 153.13
    epichlorohydrin 581.47
    1,1,1-trichloroethane 626.03
    2-aminoethanol 584.25
    morpholine-4-carbaldehyde 578.48
    sulfolane 544.86
    2,2,4-trimethylpentane 74.52
    2-methyltetrahydrofuran 603.15
    n-hexyl acetate 297.41
    isooctane 58.13
    2-(2-butoxyethoxy)ethanol 484.27
    sec-butyl acetate 138.22
    tert-butyl acetate 190.41
    decalin 100.48
    glycerin 492.56
    diglyme 753.02
    acrylic acid 369.25
    isopropyl myristate 150.13
    n-butyric acid 492.31
    acetyl acetate 209.89
    di(2-ethylhexyl) phthalate 157.37
    ethyl propionate 190.38
    nitromethane 477.6
    1,2-diethoxyethane 408.31
    benzonitrile 384.62
    trioctyl phosphate 108.37
    1-bromopropane 576.47
    gamma-valerolactone 511.02
    n-decanol 204.93
    triethyl phosphate 121.75
    4-methyl-2-pentanol 211.16
    propionitrile 503.42
    vinylene carbonate 286.9
    1,1,2-trichlorotrifluoroethane 531.14
    DMS 232.81
    cumene 152.05
    2-octanol 175.58
    2-hexanone 236.18
    octyl acetate 190.68
    limonene 229.04
    1,2-dimethoxyethane 635.94
    ethyl orthosilicate 121.9
    tributyl phosphate 126.46
    diacetone alcohol 283.19
    N,N-dimethylaniline 293.13
    acrylonitrile 549.87
    aniline 475.16
    1,3-propanediol 549.95
    bromobenzene 441.67
    dibromomethane 1062.96
    1,1,2,2-tetrachloroethane 863.26
    2-methyl-cyclohexyl acetate 192.2
    tetrabutyl urea 184.59
    diisobutyl methanol 173.27
    2-phenylethanol 331.78
    styrene 296.94
    dioctyl adipate 212.79
    dimethyl sulfate 238.28
    ethyl butyrate 231.11
    methyl lactate 238.33
    butyl lactate 172.82
    diethyl carbonate 168.93
    propanediol butyl ether 403.3
    triethyl orthoformate 165.98
    p-tert-butyltoluene 147.99
    methyl 4-tert-butylbenzoate 271.88
    morpholine 1044.0
    tert-butylamine 593.73
    n-dodecanol 173.09
    dimethoxymethane 483.42
    ethylene carbonate 230.8
    cyrene 245.46
    2-ethoxyethyl acetate 234.9
    2-ethylhexyl acetate 198.29
    1,2,4-trichlorobenzene 354.62
    4-methylpyridine 639.89
    dibutyl ether 274.09
    2,6-dimethyl-4-heptanol 173.27
    DEF 427.78
    dimethyl isosorbide 398.05
    tetrachloroethylene 543.35
    eugenol 269.04
    triacetin 295.08
    span 80 360.75
    1,4-butanediol 289.58
    1,1-dichloroethane 722.59
    2-methyl-1-pentanol 359.92
    methyl formate 248.7
    2-methyl-1-butanol 553.9
    n-decane 79.44
    butyronitrile 512.87
    3,7-dimethyl-1-octanol 269.81
    1-chlorooctane 201.13
    1-chlorotetradecane 99.75
    n-nonane 82.35
    undecane 64.43
    tert-butylcyclohexane 89.55
    cyclooctane 92.52
    cyclopentanol 503.64
    tetrahydropyran 853.6
    tert-amyl methyl ether 324.92
    2,5,8-trioxanonane 608.21
    1-hexene 351.15
    2-isopropoxyethanol 340.19
    2,2,2-trifluoroethanol 129.66
    methyl butyrate 244.79

    Scent© AI

1 3

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
Orris butter 8002-73-1 Iris florentina L., fam. Iridaceae 0.01%