(4E,8E)-(+)-2,6,6,9-Tetramethyl-4,8-cycloundecadien-1-one

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  • Identifiers

    CAS number
    24405-90-1

    Molecular formula
    C15H24O

    SMILES
    CC1C/C=C/C(C/C=C(/CCC1=O)\C)(C)C

  • Odor profile

    Herbal 57.36%
    Mint 49.35%
    Woody 47.87%
    Spicy 40.61%
    Tobacco 38.24%
    Natural 35.19%
    Camphoreous 35.13%
    Citrus 34.83%
    Animal 33.56%
    Musk 32.7%

    Scent© AI

  • Properties

    XLogP3-AA
    3.8

    Molecular weight
    220.35 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Very slow

    Boiling point est.
    286°C

    Flash point est.
    120.35 ˚C

  • Synonyms

    • (4E,8E)-(+)-2,6,6,9-Tetramethyl-4,8-cycloundecadien-1-one
    • 24405-90-1
    • XWFINABYEHNSEP-VKLURXMVSA-N
    • DTXSID901198225

  • Applications

    (4E,8E)-(+)-2,6,6,9-Tetramethyl-4,8-cycloundecadien-1-one (CAS 24405-90-1) is primarily applied as a specialty fragrance ingredient in perfumery and flavor/fragrance formulations, where the E,E geometry and (+) configuration deliver warm, diffusive, long-lasting tonalities that reinforce base notes and extend performance in fine fragrances, personal care, detergents, and candles; it also serves as a synthetic intermediate for building terpenoid/amber frameworks, an analytical reference (GC–MS, chiral GC) for quality control, a tool in olfaction research and controlled-release optimization (microencapsulation/polymer matrices), and for stability assessments in hydroalcoholic, emulsion, and surfactant systems; best practices include IFRA/REACH compliance, verification of enantiopurity due to odor-threshold effects, low-dose use (typically ppm-levels depending on base), closed, light-protected storage, and safe handling to avoid direct exposure to the neat material.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 200.15
    methanol 115.89
    isopropanol 226.41
    water 0.19
    ethyl acetate 373.08
    n-propanol 235.08
    acetone 293.23
    n-butanol 252.56
    acetonitrile 215.42
    DMF 320.05
    toluene 496.33
    isobutanol 215.02
    1,4-dioxane 489.82
    methyl acetate 391.1
    THF 669.22
    2-butanone 516.93
    n-pentanol 217.28
    sec-butanol 301.15
    n-hexane 85.63
    ethylene glycol 25.18
    NMP 324.36
    cyclohexane 117.32
    DMSO 230.38
    n-butyl acetate 466.63
    n-octanol 204.61
    chloroform 1128.32
    n-propyl acetate 308.27
    acetic acid 112.0
    dichloromethane 845.45
    cyclohexanone 565.54
    propylene glycol 83.0
    isopropyl acetate 275.5
    DMAc 457.4
    2-ethoxyethanol 207.34
    isopentanol 286.48
    n-heptane 66.11
    ethyl formate 188.64
    1,2-dichloroethane 448.37
    n-hexanol 355.47
    2-methoxyethanol 245.77
    isobutyl acetate 250.04
    tetrachloromethane 182.23
    n-pentyl acetate 275.98
    transcutol 973.6
    n-heptanol 199.99
    ethylbenzene 322.07
    MIBK 288.27
    2-propoxyethanol 380.74
    tert-butanol 332.75
    MTBE 393.64
    2-butoxyethanol 276.8
    propionic acid 172.35
    o-xylene 310.2
    formic acid 23.69
    diethyl ether 305.69
    m-xylene 343.96
    p-xylene 384.41
    chlorobenzene 425.7
    dimethyl carbonate 108.74
    n-octane 30.1
    formamide 48.96
    cyclopentanone 511.04
    2-pentanone 359.39
    anisole 438.11
    cyclopentyl methyl ether 350.12
    gamma-butyrolactone 419.5
    1-methoxy-2-propanol 280.3
    pyridine 581.47
    3-pentanone 311.74
    furfural 436.87
    n-dodecane 24.65
    diethylene glycol 175.4
    diisopropyl ether 139.45
    tert-amyl alcohol 348.08
    acetylacetone 315.92
    n-hexadecane 28.56
    acetophenone 388.93
    methyl propionate 267.39
    isopentyl acetate 449.59
    trichloroethylene 942.31
    n-nonanol 186.65
    cyclohexanol 272.74
    benzyl alcohol 294.35
    2-ethylhexanol 286.53
    isooctanol 179.11
    dipropyl ether 272.05
    1,2-dichlorobenzene 379.55
    ethyl lactate 154.93
    propylene carbonate 337.36
    n-methylformamide 112.8
    2-pentanol 226.59
    n-pentane 66.26
    1-propoxy-2-propanol 377.9
    1-methoxy-2-propyl acetate 382.38
    2-(2-methoxypropoxy) propanol 340.32
    mesitylene 215.01
    ε-caprolactone 469.06
    p-cymene 209.21
    epichlorohydrin 556.99
    1,1,1-trichloroethane 600.47
    2-aminoethanol 80.22
    morpholine-4-carbaldehyde 404.2
    sulfolane 390.11
    2,2,4-trimethylpentane 49.0
    2-methyltetrahydrofuran 602.53
    n-hexyl acetate 422.54
    isooctane 43.46
    2-(2-butoxyethoxy)ethanol 398.53
    sec-butyl acetate 274.61
    tert-butyl acetate 311.6
    decalin 86.76
    glycerin 83.48
    diglyme 588.21
    acrylic acid 125.2
    isopropyl myristate 191.52
    n-butyric acid 261.04
    acetyl acetate 211.18
    di(2-ethylhexyl) phthalate 187.04
    ethyl propionate 277.39
    nitromethane 217.38
    1,2-diethoxyethane 420.11
    benzonitrile 409.6
    trioctyl phosphate 123.84
    1-bromopropane 400.63
    gamma-valerolactone 544.83
    n-decanol 143.61
    triethyl phosphate 160.12
    4-methyl-2-pentanol 185.84
    propionitrile 281.97
    vinylene carbonate 294.7
    1,1,2-trichlorotrifluoroethane 321.62
    DMS 287.45
    cumene 230.76
    2-octanol 150.89
    2-hexanone 358.92
    octyl acetate 225.87
    limonene 249.33
    1,2-dimethoxyethane 411.27
    ethyl orthosilicate 159.84
    tributyl phosphate 151.52
    diacetone alcohol 302.8
    N,N-dimethylaniline 303.88
    acrylonitrile 271.86
    aniline 347.94
    1,3-propanediol 128.75
    bromobenzene 496.0
    dibromomethane 620.45
    1,1,2,2-tetrachloroethane 784.41
    2-methyl-cyclohexyl acetate 312.62
    tetrabutyl urea 185.04
    diisobutyl methanol 178.39
    2-phenylethanol 345.03
    styrene 358.58
    dioctyl adipate 257.19
    dimethyl sulfate 146.79
    ethyl butyrate 333.1
    methyl lactate 130.88
    butyl lactate 235.63
    diethyl carbonate 229.22
    propanediol butyl ether 288.68
    triethyl orthoformate 225.44
    p-tert-butyltoluene 202.26
    methyl 4-tert-butylbenzoate 330.23
    morpholine 541.66
    tert-butylamine 253.24
    n-dodecanol 114.89
    dimethoxymethane 219.91
    ethylene carbonate 240.39
    cyrene 263.76
    2-ethoxyethyl acetate 346.63
    2-ethylhexyl acetate 368.33
    1,2,4-trichlorobenzene 456.2
    4-methylpyridine 666.53
    dibutyl ether 254.03
    2,6-dimethyl-4-heptanol 178.39
    DEF 324.83
    dimethyl isosorbide 498.5
    tetrachloroethylene 415.84
    eugenol 299.63
    triacetin 383.78
    span 80 306.09
    1,4-butanediol 66.39
    1,1-dichloroethane 576.73
    2-methyl-1-pentanol 269.21
    methyl formate 91.68
    2-methyl-1-butanol 265.39
    n-decane 42.99
    butyronitrile 344.69
    3,7-dimethyl-1-octanol 245.23
    1-chlorooctane 168.84
    1-chlorotetradecane 70.22
    n-nonane 41.28
    undecane 31.2
    tert-butylcyclohexane 84.98
    cyclooctane 51.21
    cyclopentanol 230.01
    tetrahydropyran 594.53
    tert-amyl methyl ether 313.86
    2,5,8-trioxanonane 438.8
    1-hexene 266.77
    2-isopropoxyethanol 211.38
    2,2,2-trifluoroethanol 44.98
    methyl butyrate 348.31

    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
Clove leaf (Indonesia) 1 8000-34-8 Eugenia caryophyllus (Spreng.) Bullock & Harrison, fam. Myrtaceae 0.01%
Curcuma aeruginosa (Indonesia) Curcuma aeruginosa Roxb., fam. Zingiberaceae 2.1%
Curcuma heyneana (Indonesia) Curcuma heyneana Val., fam. Zingiberaceae 1.8%