alpha-Cedrene

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  • Identifiers

    CAS number
    469-61-4

    Molecular formula
    C15H24

    SMILES
    C[C@@H]1CC[C@@H]2[C@]13CC=C([C@H](C3)C2(C)C)C

    Safety labels

    Flammable
    Flammable

    Health Hazard
    Health

    Environmental Hazard
    Environmental

    Retention indicies (RI)

    • DB5: 1436.0
    • Carbowax: 1583.67

  • Odor profile

    Woody 89.4%
    Sweet 59.72%
    Dry 52.46%
    Amber 46.69%
    Spicy 43.73%
    Cedar 42.43%
    Fresh 39.9%
    Balsamic 36.3%
    Pine 36.08%
    Sandalwood 35.87%

    Scent© AI

  • Properties

    XLogP3-AA
    4.6

    pKa est.
    10.02 (weak base)

    Molecular weight
    204.35 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    261°C

    Flash point est.
    109.38 ˚C

  • Synonyms

    • ALPHA-CEDRENE
    • (-)-alpha-cedrene
    • 469-61-4
    • Cedr-8-ene
    • (-)-cedrene
    • Cedrene
    • .alpha.-Cedrene
    • Levo-alpha-cedrene
    • Laevo-alpha-cedrene
    • (-)-.alpha.-Cedrene
    • 1H-3a,7-Methanoazulene, 2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-,(3R,3aS,7S,8aS)-
    • DTXSID0047032
    • 50D4A81G8T
    • EINECS 207-418-4
    • BRN 3196861
    • LEVO-.ALPHA.-CEDRENE
    • [3R-(3alpha,3abeta,7beta,8aalpha)]-2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-1H-3a,7-methanoazulene
    • CHEBI:10216
    • DTXCID801022504
    • 3-05-00-01095 (Beilstein Handbook Reference)
    • (1S,2R,5S,7S)-2,6,6,8-tetramethyltricyclo[5.3.1.0(1,5)]undec-8-ene
    • J5.927G
    • 1H-3a,7-Methanoazulene, 2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-, [3R-(3.alpha.,3a.beta.,7.beta.,8a.alpha.)]-
    • 1H-3a,7-Methanoazulene, 2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-, (3R,3aS,7S,8aS)-
    • (1S,2R,5S,7S)-2,6,6,8-tetramethyltricyclo[5.3.1.01,5]undec-8-ene
    • (3R,3aS,7S,8aS)-3,6,8,8-Tetramethyl-2,3,4,7,8,8a-hexahydro-1H-3a,7-methanoazulene
    • (3R,3AS,7S,8AS)-2,3,4,7,8,8A-HEXAHYDRO-3,6,8,8-TETRAMETHYL-1H-3A,7-METHANOAZULENE
    • (3R-(3.ALPHA.,3A.BETA.,7.BETA.,8A.ALPHA.))-2,3,4,7,8,8A-HEXAHYDRO-3,6,8,8-TETRAMETHYL-1H-3A,7-METHANOAZULENE
    • (3R-(3alpha,3Abeta,7beta,8aalpha))-2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-1H-3a,7-methanoazulene
    • (?)-|A-Cedrene
    • (-)-a-Cedrene (major, contains (+)-b-cedrene)
    • DTXSID00859378
    • UNII-50D4A81G8T
    • (1S,2R,5S,7S)-2,6,6,8-tetramethyltricyclo(5.3.1.0(1,5))undec-8-ene
    • (1S,2R,5S,7S)-2,6,6,8-tetramethyltricyclo(5.3.1.01,5)undec-8-ene
    • MFCD00063003
    • (-)--Cedrene
    • (-)- alpha -Cedrene
    • ?-Cedrene, sum of isomers
    • DTXCID80210180
    • Tox21_302305
    • (1S,2R,5S)-2,6,6,8-Tetramethyltricyclo[5.3.1.01.5]undec-8-ene
    • a-Cedrene 100 microg/mL in Methanol
    • AKOS030503768
    • LMPR0103690006
    • NCGC00256204-01
    • 1H-3a,7-Methanoazulene, 2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-, (3R-(3alpha,3abeta,7beta,8aalpha))-
    • BS-42448
    • CAS-469-61-4
    • FC172232
    • HY-135190
    • CS-0109773
    • C22909
    • Q27108601
    • (-)-alpha-Cedrene, >=95.0% (sum of enantiomers, GC)
    • 207-418-4

  • Applications

    Alpha-cedrene (CAS 469-61-4) is a major sesquiterpene hydrocarbon of cedarwood oil with warm, dry, resinous woody tonality, widely used as a fragrance ingredient in fine perfumery, cosmetics, personal care, soaps, detergents, air-care (candles, wax melts, reed diffusers), and automotive fresheners to add depth, substantivity, and to build woody–amber–chypre–leather accords; it is also employed at very low levels as a flavor modifier to impart cedar/woody nuances within regulatory limits; serves as an active scent component in cedarwood-based insect-repellent formulations for pet care, closets, treated textiles, and sachets; used in research and industry as a scaffold/intermediate for terpenoid synthesis, a GC/GC‑MS reference and retention-index marker for quality control, provenance verification, and adulteration detection of essential oils; applicable in fragrance microencapsulation, scent masterbatches for polymers, and wood-care polishes to deliver cedar notes and mild pest deterrence; generally safe when used per IFRA and applicable regulations, with assessment needed for sensitization, flammability, and oxidative stability; reported bioactivities (e.g., antimicrobial, insect-repellent) are mainly from in vitro/limited in vivo studies and are not medicinal claims.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 98.53
    methanol 67.18
    isopropanol 103.77
    water 0.7
    ethyl acetate 278.54
    n-propanol 117.97
    acetone 268.61
    n-butanol 141.39
    acetonitrile 204.81
    DMF 241.07
    toluene 536.34
    isobutanol 106.53
    1,4-dioxane 554.12
    methyl acetate 224.23
    THF 1017.02
    2-butanone 259.53
    n-pentanol 71.07
    sec-butanol 85.3
    n-hexane 59.71
    ethylene glycol 14.65
    NMP 279.71
    cyclohexane 173.08
    DMSO 115.12
    n-butyl acetate 357.76
    n-octanol 118.65
    chloroform 618.91
    n-propyl acetate 161.39
    acetic acid 68.19
    dichloromethane 544.51
    cyclohexanone 504.5
    propylene glycol 22.4
    isopropyl acetate 251.48
    DMAc 210.65
    2-ethoxyethanol 90.9
    isopentanol 131.37
    n-heptane 112.7
    ethyl formate 142.32
    1,2-dichloroethane 328.8
    n-hexanol 211.08
    2-methoxyethanol 147.34
    isobutyl acetate 160.26
    tetrachloromethane 186.02
    n-pentyl acetate 207.27
    transcutol 309.78
    n-heptanol 130.31
    ethylbenzene 216.18
    MIBK 238.83
    2-propoxyethanol 263.61
    tert-butanol 131.98
    MTBE 229.94
    2-butoxyethanol 166.26
    propionic acid 83.55
    o-xylene 287.25
    formic acid 16.7
    diethyl ether 279.07
    m-xylene 390.09
    p-xylene 265.82
    chlorobenzene 375.3
    dimethyl carbonate 128.63
    n-octane 43.67
    formamide 36.11
    cyclopentanone 592.54
    2-pentanone 277.0
    anisole 276.17
    cyclopentyl methyl ether 492.36
    gamma-butyrolactone 506.29
    1-methoxy-2-propanol 153.54
    pyridine 491.4
    3-pentanone 238.31
    furfural 332.34
    n-dodecane 31.52
    diethylene glycol 114.09
    diisopropyl ether 163.95
    tert-amyl alcohol 94.95
    acetylacetone 328.85
    n-hexadecane 37.96
    acetophenone 224.76
    methyl propionate 219.85
    isopentyl acetate 339.38
    trichloroethylene 529.98
    n-nonanol 116.75
    cyclohexanol 189.67
    benzyl alcohol 144.44
    2-ethylhexanol 167.77
    isooctanol 114.15
    dipropyl ether 309.23
    1,2-dichlorobenzene 333.07
    ethyl lactate 71.36
    propylene carbonate 277.46
    n-methylformamide 106.11
    2-pentanol 105.87
    n-pentane 75.34
    1-propoxy-2-propanol 217.59
    1-methoxy-2-propyl acetate 333.1
    2-(2-methoxypropoxy) propanol 157.54
    mesitylene 269.89
    ε-caprolactone 390.31
    p-cymene 212.4
    epichlorohydrin 454.07
    1,1,1-trichloroethane 391.45
    2-aminoethanol 36.0
    morpholine-4-carbaldehyde 341.71
    sulfolane 347.04
    2,2,4-trimethylpentane 40.93
    2-methyltetrahydrofuran 531.09
    n-hexyl acetate 265.41
    isooctane 50.01
    2-(2-butoxyethoxy)ethanol 188.8
    sec-butyl acetate 152.04
    tert-butyl acetate 275.4
    decalin 82.54
    glycerin 34.39
    diglyme 371.16
    acrylic acid 66.86
    isopropyl myristate 146.08
    n-butyric acid 167.21
    acetyl acetate 219.56
    di(2-ethylhexyl) phthalate 114.0
    ethyl propionate 179.11
    nitromethane 150.74
    1,2-diethoxyethane 251.35
    benzonitrile 264.66
    trioctyl phosphate 96.38
    1-bromopropane 293.38
    gamma-valerolactone 525.26
    n-decanol 88.79
    triethyl phosphate 126.95
    4-methyl-2-pentanol 96.93
    propionitrile 239.5
    vinylene carbonate 266.8
    1,1,2-trichlorotrifluoroethane 170.74
    DMS 223.55
    cumene 151.53
    2-octanol 92.08
    2-hexanone 175.33
    octyl acetate 156.33
    limonene 250.25
    1,2-dimethoxyethane 249.66
    ethyl orthosilicate 132.27
    tributyl phosphate 106.56
    diacetone alcohol 179.01
    N,N-dimethylaniline 190.11
    acrylonitrile 222.28
    aniline 275.85
    1,3-propanediol 75.95
    bromobenzene 483.19
    dibromomethane 400.55
    1,1,2,2-tetrachloroethane 362.52
    2-methyl-cyclohexyl acetate 224.16
    tetrabutyl urea 131.42
    diisobutyl methanol 128.23
    2-phenylethanol 236.17
    styrene 237.43
    dioctyl adipate 159.31
    dimethyl sulfate 142.92
    ethyl butyrate 256.66
    methyl lactate 79.87
    butyl lactate 125.6
    diethyl carbonate 164.08
    propanediol butyl ether 102.47
    triethyl orthoformate 195.33
    p-tert-butyltoluene 217.34
    methyl 4-tert-butylbenzoate 241.69
    morpholine 454.23
    tert-butylamine 122.6
    n-dodecanol 71.01
    dimethoxymethane 330.03
    ethylene carbonate 244.91
    cyrene 146.5
    2-ethoxyethyl acetate 244.64
    2-ethylhexyl acetate 299.69
    1,2,4-trichlorobenzene 335.74
    4-methylpyridine 492.57
    dibutyl ether 189.23
    2,6-dimethyl-4-heptanol 128.23
    DEF 233.17
    dimethyl isosorbide 354.88
    tetrachloroethylene 271.39
    eugenol 181.15
    triacetin 205.97
    span 80 151.56
    1,4-butanediol 27.76
    1,1-dichloroethane 327.95
    2-methyl-1-pentanol 79.03
    methyl formate 99.0
    2-methyl-1-butanol 110.75
    n-decane 53.74
    butyronitrile 253.67
    3,7-dimethyl-1-octanol 125.78
    1-chlorooctane 132.89
    1-chlorotetradecane 63.69
    n-nonane 51.78
    undecane 40.14
    tert-butylcyclohexane 70.93
    cyclooctane 95.76
    cyclopentanol 182.47
    tetrahydropyran 575.61
    tert-amyl methyl ether 169.95
    2,5,8-trioxanonane 246.49
    1-hexene 125.66
    2-isopropoxyethanol 87.76
    2,2,2-trifluoroethanol 44.63
    methyl butyrate 192.02

    Scent© AI

1 4

IFRA standard 51

Recommendation
Restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 0.27 % Category 7A
Rinse-off products applied to the hair with some hand contact
 3.1 %
Category 2
Products applied to the axillae
 0.08 % Category 7B
Leave-on products applied to the hair with some hand contact
 3.1 %
Category 3
Products applied to the face/body using fingertips
 1.6 % Category 8
Products with significant anogenital exposure
 0.16 %
Category 4
Products related to fine fragrance
 1.5 % Category 9
Products with body and hand exposure, primarily rinse off
 2.9 %
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 0.38 % Category 10A
Household care products with mostly hand contact
 11 %
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 0.38 % Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 11 %
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 0.38 % Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 5.8 %
Category 5D
Baby Creams, baby Oils and baby talc
 0.38 % Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 5.8 %
Category 6
Products with oral and lip exposure
 0.88 % Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction

Botanical

Name CAS Botanical Proportion
Ayou Aydendron barbeyana Mez. (Nectandra globosa Mez.), fam. Lauraceae 0.1%
Carrot seed (France) 1 8015-88-1 Daucus carota L., fam. Apiaceae (Umbelliferae) 0.09%
Cedarwood, Mulanje Widdringtonia whytei Rendle, fam. Cupressaceae 2.0%
Cedarwood Texas 1 Juniperus mexicana L., fam. Cupressaceae 21.2%
Cedarwood Texas 2 Juniperus mexicana L., fam. Cupressaceae 24.1%
Cedarwood Virginia 2 8000-27-9 Juniperus virginiana L., fam. Cupressaceae 20.0%
Cedarwood Virginia 3 8000-27-9 Juniperus virginiana L., fam. Cupressaceae 24.55%
Cypress 8013-86-3 Cupressus sempervirens L. (C. fastigiata DC), fam. Cupressaceae 0.5%
Ducrosia anethifolia (Pakistan) Ducrosia anethifolia (DC.) Boiss., fam. Apiaceae (Umbelliferae) 0.14%
Juniper branch 8012-91-7 Juniperus communis L., fam. Cupressaceae 2.7%
Pimpinella diversifolia root Pimpinella diversifolia DC., fam. Apiaceae (Umbelliferae) 1.4%
Pinus yunnanensis (China) Pinus yunnanensis Franch, fam. Pinaceae 0.87%
Pinus pinaster (France) 8000-26-8 Pinus pinaster Ait., fam. Pinaceae 0.01%
Verbena 2 8024-12-2 Lippia citriodora Kunth., fam. Verbenaceae 0.2%
Rosa rugosa Rosa rugosa Thunb., var. plena Regel, fam. Rosaceae 0.01%
Cypress cones (Egypt) 8013-86-3 Cupressus sempervirens L. (C. fastigiata DC), fam. Cupressaceae 0.3%
Lippia carviodora var. minor (Kenya) Lippia carviodora var. minor Meikle, fam. Verbenaceae 4.6%
Celery plant 8015-90-5 Apium graveolens L. var. dulce, fam. Apiaceae (Umbelliferae) 0.01%
Carrot seed 2 8015-88-1 Daucus carota L., fam. Apiaceae (Umbelliferae) 0.15%
Erigeron canadensis Erigeron canadensis L. (Conyza canadensis (L.) Cronquist), fam. Asteraceae 0.3%
Cedrus atlantica (Morocco) Cedrus atlantica Man., fam. Cupressaceae 0.1%
Lemon verbena (Morocco) 1 Aloysia triphylla (L'Herit.) Britton (Lippia citriodora (Lam.) O. Kuntze) 0.4%
Fir needle balsam (Canada) 3 8021-28-1 Abies balsamea (L.) Mill., fam. Pinaceae 0.1%
Cypress (Algeria) 8013-86-3 Cupressus sempervirens L. (C. fastigiata DC), fam. Cupressaceae 0.1%
Pelargonium citronellum Pelargonium citronellum J.J.A. v.d. Walt, fam. Geraniaceae 0.4%
Cupressus funebris Cupressus funebris Endl., fam. Cupressaceae 2.11%
Michelia yunnanensis flower headspace (China) Michelia yunnanensis Franch. ex Finet et Gagnep., fam. Magnoliaceae 25.39%
Dendrobium chrysatoxum flower (China) Dendrobium chrysatoxum Lindl., fam. Orchidaceae 0.15%
Ylang Ylang (Colombia) 8006-81-3 Cananga odorata (Lamk.) Hook. f. et Thomson forma genuina, fam. Annonaceae 0.5%
Phoebe 2 Phoebe porsa Mez. (syn. Oreodaphne prosa Nees & Mart.), fam. Lauraceae 0.3%
Guava leaf 3 91770-12-6 Psidium guajava L., fam. Myrtaceae 0.62%
Psiadia lithospermifolia Psiadia lithospermifolia (Lam.) Cordem., fam. Asteraceae (Compositae) 1.84%
Coreopsis grandiflora leaf (Cameroon) Coreopsis grandiflora Hogg ex Sweet, fam. Asteraceae (Compositae) 1.2%
Valeriana javanica root (Indonesia) Valeriana javanica Blume, fam. Valerianaceae 14.8%
Lemon verbena (Turkey) Aloysia triphylla (L'Herit.) Britton, fam. Verbenaceae 0.4%
Magnolia coco Magnolia coco (Lour.) DC., fam. Magnoliaceae 0.19%
Ginger (China) 7 8007-08-7 Zingiber officinale Roscoe, fam. Zingiberaceae 3.39%
Clary sage (Spain) 8016-63-5 Salvia sclarea L., fam. Lamiaceae (Labiatae) 0.14%
Lavender (Lithuania) 8000-28-0 Lavandula angustifolia Mill., fam. Lamiaceae (Labiatae) 0.05%
Calamus (China) 1c root 8015-79-0 Acorus calamus L., fam. Araceae 0.61%
Helichrysum italicum (Croatia) 1b 8023-95-8 Helichrysum italicum (Roth) G. Don, fam. Asteraceae (Compositae) 4.05%
Helichrysum italicum (Croatia) 1a 8023-95-8 Helichrysum italicum (Roth) G. Don, fam. Asteraceae (Compositae) 10.0%
Fitweed seed Eryngium foetidum L., fam. Apiaceae (Umbelliferae) 3.39%
Solanum incisum flower Solanum incisum Griseb., fam. Solanaceae 0.2%
Flourensia oolepsis Flourensia oolepsis S.L. Blake, fam. Asteraceae (Compositae) 0.01%
Cedarwood Virginia 4 8000-27-9 Juniperus virginiana L., fam. Cupressaceae 30.4%
Cypress, Leyland (Poland) Cupressocyparis leylandii (Dall. et Jacks.) Dall., fam. Cupressaceae 0.01%
Guava fruit (Cuba) 91770-12-6 Psidium guajava L., fam. Myrtaceae 0.1%
Lantana camara (India) 1a leaf 90046-17-6 Lantana camara L., fam. Verbenaceae 0.1%
Lantana camara (India) 1b flower 90046-17-6 Lantana camara L., fam. Verbenaceae 0.1%