6,6-Dimethyl-2-methylidenecyclohex-3-ene-1-carbaldehyde

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    33399-07-4

    Molecular formula
    C10H14O

    SMILES
    CC1(CC=CC(=C)C1C=O)C

  • Odor profile

    Green 68.54%
    Herbal 66.21%
    Fruity 50.6%
    Mint 49.24%
    Woody 46.13%
    Spicy 45.68%
    Fresh 40.03%
    Citrus 36.95%
    Leafy 35.07%
    Floral 34.43%

    Scent© AI

  • Properties

    XLogP3-AA
    2.1

    Molecular weight
    150.22 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point est.
    199°C

    Flash point est.
    87.17 ˚C

  • Synonyms

    • 6,6-Dimethyl-2-methylidenecyclohex-3-ene-1-carbaldehyde
    • 33399-07-4
    • DTXSID50577277
    • DTXCID10528048
    • HIQSWLVZAOEUPK-UHFFFAOYSA-N
    • 2-methylene-6,6-dimethylcyclohex-3-ene-1-carboxaldehyde

  • Applications

    6,6-Dimethyl-2-methylidenecyclohex-3-ene-1-carbaldehyde (CAS 33399-07-4) is a terpenoid aldehyde with a fresh, green, slightly citrus–woody odor, making it useful as a fragrance ingredient in fine perfumery, deodorants, personal care, and household cleaners, where it adds green/aromatic lift and diffusion to herbal, citrus, and woody accords; in flavor work, it may be employed at very low dosages as a modifier imparting minty–herbal or perilla-like nuances (subject to strict safety assessments and use limits); as a versatile synthetic building block, it undergoes typical carbonyl chemistry (reduction to alcohols, oxidation to acids, acetal formation, imine/oxime formation) and transformations on its exocyclic double bond (epoxidation, hydroboration–oxidation, halogenation, ozonolysis), enabling access to diverse fragrance, pharma/agrochemical, and functional-material derivatives; its stable ring and activated aldehyde also support the formation of Schiff bases/polyimines for odor-capture materials, sensors, or as a crosslinkable handle in polymers and resins; analytically, it can serve as a reference standard, reaction probe, or model substrate to study kinetics and oxidative stability of terpenoid aldehydes in consumer product matrices; additionally, potential bioactivities reported for related terpenoid aldehydes (antimicrobial, antioxidant, insect-repellent) motivate exploratory use in cleaning/preservation systems, provided all applications are verified for safety, formulation compatibility, and compliance with IFRA and local regulations.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 427.9
    methanol 484.98
    isopropanol 304.79
    water 1.15
    ethyl acetate 528.28
    n-propanol 377.44
    acetone 485.26
    n-butanol 323.34
    acetonitrile 532.01
    DMF 463.03
    toluene 337.47
    isobutanol 235.19
    1,4-dioxane 1013.57
    methyl acetate 479.45
    THF 1482.37
    2-butanone 472.79
    n-pentanol 191.3
    sec-butanol 258.05
    n-hexane 83.5
    ethylene glycol 58.12
    NMP 570.33
    cyclohexane 148.62
    DMSO 343.12
    n-butyl acetate 385.25
    n-octanol 134.05
    chloroform 1044.33
    n-propyl acetate 235.86
    acetic acid 357.29
    dichloromethane 820.34
    cyclohexanone 694.7
    propylene glycol 82.89
    isopropyl acetate 295.47
    DMAc 264.61
    2-ethoxyethanol 236.25
    isopentanol 241.3
    n-heptane 67.97
    ethyl formate 285.07
    1,2-dichloroethane 547.11
    n-hexanol 413.49
    2-methoxyethanol 405.73
    isobutyl acetate 153.96
    tetrachloromethane 186.5
    n-pentyl acetate 177.4
    transcutol 1021.82
    n-heptanol 141.34
    ethylbenzene 142.86
    MIBK 246.28
    2-propoxyethanol 481.66
    tert-butanol 345.82
    MTBE 349.47
    2-butoxyethanol 215.71
    propionic acid 307.45
    o-xylene 168.97
    formic acid 147.87
    diethyl ether 565.42
    m-xylene 232.28
    p-xylene 164.7
    chlorobenzene 387.82
    dimethyl carbonate 149.98
    n-octane 21.91
    formamide 177.76
    cyclopentanone 788.79
    2-pentanone 416.23
    anisole 246.72
    cyclopentyl methyl ether 617.44
    gamma-butyrolactone 944.48
    1-methoxy-2-propanol 347.54
    pyridine 565.62
    3-pentanone 309.45
    furfural 552.36
    n-dodecane 15.29
    diethylene glycol 283.94
    diisopropyl ether 172.45
    tert-amyl alcohol 234.71
    acetylacetone 372.13
    n-hexadecane 17.67
    acetophenone 188.02
    methyl propionate 356.12
    isopentyl acetate 317.18
    trichloroethylene 958.19
    n-nonanol 114.63
    cyclohexanol 346.35
    benzyl alcohol 164.68
    2-ethylhexanol 201.36
    isooctanol 109.45
    dipropyl ether 265.65
    1,2-dichlorobenzene 302.56
    ethyl lactate 109.21
    propylene carbonate 449.35
    n-methylformamide 317.66
    2-pentanol 225.57
    n-pentane 90.83
    1-propoxy-2-propanol 342.79
    1-methoxy-2-propyl acetate 377.97
    2-(2-methoxypropoxy) propanol 217.02
    mesitylene 139.65
    ε-caprolactone 590.3
    p-cymene 99.86
    epichlorohydrin 858.27
    1,1,1-trichloroethane 593.66
    2-aminoethanol 140.57
    morpholine-4-carbaldehyde 531.55
    sulfolane 646.35
    2,2,4-trimethylpentane 35.55
    2-methyltetrahydrofuran 917.75
    n-hexyl acetate 268.99
    isooctane 39.03
    2-(2-butoxyethoxy)ethanol 307.77
    sec-butyl acetate 176.62
    tert-butyl acetate 305.08
    decalin 54.18
    glycerin 112.37
    diglyme 502.96
    acrylic acid 247.74
    isopropyl myristate 104.68
    n-butyric acid 391.35
    acetyl acetate 290.08
    di(2-ethylhexyl) phthalate 91.87
    ethyl propionate 227.33
    nitromethane 556.72
    1,2-diethoxyethane 387.48
    benzonitrile 286.88
    trioctyl phosphate 69.64
    1-bromopropane 411.96
    gamma-valerolactone 825.44
    n-decanol 87.78
    triethyl phosphate 101.17
    4-methyl-2-pentanol 146.08
    propionitrile 397.24
    vinylene carbonate 398.7
    1,1,2-trichlorotrifluoroethane 341.96
    DMS 226.92
    cumene 93.45
    2-octanol 89.35
    2-hexanone 248.77
    octyl acetate 127.93
    limonene 152.8
    1,2-dimethoxyethane 404.21
    ethyl orthosilicate 102.1
    tributyl phosphate 94.97
    diacetone alcohol 282.0
    N,N-dimethylaniline 139.14
    acrylonitrile 407.56
    aniline 309.17
    1,3-propanediol 212.32
    bromobenzene 401.3
    dibromomethane 592.33
    1,1,2,2-tetrachloroethane 634.37
    2-methyl-cyclohexyl acetate 183.23
    tetrabutyl urea 106.83
    diisobutyl methanol 118.2
    2-phenylethanol 246.15
    styrene 166.51
    dioctyl adipate 132.04
    dimethyl sulfate 187.46
    ethyl butyrate 242.33
    methyl lactate 144.33
    butyl lactate 132.82
    diethyl carbonate 161.64
    propanediol butyl ether 173.3
    triethyl orthoformate 165.44
    p-tert-butyltoluene 101.71
    methyl 4-tert-butylbenzoate 184.64
    morpholine 998.26
    tert-butylamine 245.21
    n-dodecanol 68.61
    dimethoxymethane 412.43
    ethylene carbonate 338.47
    cyrene 169.37
    2-ethoxyethyl acetate 254.88
    2-ethylhexyl acetate 250.88
    1,2,4-trichlorobenzene 330.58
    4-methylpyridine 521.78
    dibutyl ether 182.0
    2,6-dimethyl-4-heptanol 118.2
    DEF 343.71
    dimethyl isosorbide 386.07
    tetrachloroethylene 405.86
    eugenol 170.64
    triacetin 201.8
    span 80 187.96
    1,4-butanediol 73.71
    1,1-dichloroethane 627.26
    2-methyl-1-pentanol 153.58
    methyl formate 274.47
    2-methyl-1-butanol 225.38
    n-decane 26.65
    butyronitrile 412.59
    3,7-dimethyl-1-octanol 144.34
    1-chlorooctane 108.03
    1-chlorotetradecane 43.77
    n-nonane 27.82
    undecane 19.41
    tert-butylcyclohexane 47.35
    cyclooctane 50.4
    cyclopentanol 350.82
    tetrahydropyran 1049.1
    tert-amyl methyl ether 246.73
    2,5,8-trioxanonane 315.94
    1-hexene 212.99
    2-isopropoxyethanol 172.15
    2,2,2-trifluoroethanol 132.99
    methyl butyrate 264.48

    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
Saffron 1 8022-19-3 Crocus sativus L., fam. Iridaceae 0.1%
Saffron 2 8022-19-3 Crocus sativus L., fam. Iridaceae 1.36%