2-Cyclopentene-1-acetic acid, ethyl ester

Overview IFRA Request a quote

  • Identifiers

    CAS number
    15848-49-4

    Molecular formula
    C9H14O2

    SMILES
    CCOC(=O)CC1CCC=C1

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fruity 87.07%
    Sweet 60.15%
    Pineapple 57.45%
    Floral 45.97%
    Apple 42.33%
    Green 40.4%
    Waxy 40.21%
    Peach 37.84%
    Pear 37.41%
    Honey 37.32%

     

    Flavor
    Fruity 70.79%
    Pineapple 41.36%
    Fruit 39.22%
    Tropical 33.4%
    Floral 32.59%
    Rose 28.6%
    Berry 28.37%
    Sweet 27.8%
    Green 27.53%
    Apple 27.19%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.9

    pKa est.
    7.28 (neutral)

    Molecular weight
    154.21 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point est.
    195°C

    Flash point

    • 83.24 ˚C est.

  • Synonyms

    • 15848-49-4
    • ETHYL 2-(CYCLOPENT-2-EN-1-YL)ACETATE
    • 2-Cyclopentene-1-acetic acid, ethyl ester
    • ethyl 2-cyclopent-2-en-1-ylacetate
    • DTXSID90884856
    • Ethyl cyclopent-2-en-1-ylacetate
    • EC 605-150-6
    • SCHEMBL10315910
    • UEPHOITVJAVVRX-UHFFFAOYSA-N
    • DTXCID401024277
    • QAA84849
    • NS00004944
    • ETHYL2-(CYCLOPENT-2-EN-1-YL)ACETATE
    • EN300-249643
    • 605-150-6

  • Applications

    2-Cyclopentene-1-acetic acid, ethyl ester (CAS 15848-49-4) is primarily used as an organic synthesis intermediate, serving as a building block for cyclopentenyl derivatives and related esters. It may be used as a building block in specialty polymers and coating formulations, or as a precursor for compounds in the coatings and inks sector. In fragrance chemistry, it may be evaluated as an odor-active intermediate for cyclopentenyl fragrance compounds. It is also used in research and development to prepare cyclopentenyl esters and to explore transformations such as hydrolysis or transesterification of esters. Actual usage depends on local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1237.22
    methanol 1515.57
    isopropanol 960.26
    water 2.75
    ethyl acetate 327.11
    n-propanol 846.09
    acetone 505.36
    n-butanol 739.31
    acetonitrile 523.06
    DMF 907.07
    toluene 243.55
    isobutanol 642.74
    1,4-dioxane 912.03
    methyl acetate 306.33
    THF 895.86
    2-butanone 336.86
    n-pentanol 554.24
    sec-butanol 660.68
    n-hexane 75.06
    ethylene glycol 254.66
    NMP 575.96
    cyclohexane 139.61
    DMSO 770.02
    n-butyl acetate 283.54
    n-octanol 252.8
    chloroform 1922.53
    n-propyl acetate 200.95
    acetic acid 887.49
    dichloromethane 1173.49
    cyclohexanone 564.8
    propylene glycol 426.57
    isopropyl acetate 218.16
    DMAc 560.55
    2-ethoxyethanol 488.37
    isopentanol 563.34
    n-heptane 38.81
    ethyl formate 259.61
    1,2-dichloroethane 542.63
    n-hexanol 538.91
    2-methoxyethanol 829.72
    isobutyl acetate 155.37
    tetrachloromethane 189.34
    n-pentyl acetate 174.26
    transcutol 1390.11
    n-heptanol 194.12
    ethylbenzene 143.91
    MIBK 212.71
    2-propoxyethanol 635.0
    tert-butanol 936.39
    MTBE 416.39
    2-butoxyethanol 315.13
    propionic acid 533.77
    o-xylene 154.62
    formic acid 284.44
    diethyl ether 364.72
    m-xylene 172.63
    p-xylene 181.9
    chlorobenzene 388.11
    dimethyl carbonate 124.8
    n-octane 19.87
    formamide 291.1
    cyclopentanone 532.48
    2-pentanone 296.84
    anisole 294.74
    cyclopentyl methyl ether 365.57
    gamma-butyrolactone 600.29
    1-methoxy-2-propanol 615.9
    pyridine 729.72
    3-pentanone 193.36
    furfural 613.71
    n-dodecane 24.17
    diethylene glycol 518.18
    diisopropyl ether 112.37
    tert-amyl alcohol 575.34
    acetylacetone 312.01
    n-hexadecane 26.6
    acetophenone 254.17
    methyl propionate 239.73
    isopentyl acetate 263.38
    trichloroethylene 1084.73
    n-nonanol 209.8
    cyclohexanol 590.81
    benzyl alcohol 329.14
    2-ethylhexanol 231.7
    isooctanol 157.28
    dipropyl ether 179.41
    1,2-dichlorobenzene 315.28
    ethyl lactate 161.82
    propylene carbonate 373.6
    n-methylformamide 421.0
    2-pentanol 458.78
    n-pentane 76.59
    1-propoxy-2-propanol 411.14
    1-methoxy-2-propyl acetate 265.87
    2-(2-methoxypropoxy) propanol 340.73
    mesitylene 112.25
    ε-caprolactone 467.14
    p-cymene 88.99
    epichlorohydrin 649.64
    1,1,1-trichloroethane 554.45
    2-aminoethanol 525.98
    morpholine-4-carbaldehyde 604.57
    sulfolane 640.37
    2,2,4-trimethylpentane 41.27
    2-methyltetrahydrofuran 607.54
    n-hexyl acetate 298.65
    isooctane 36.17
    2-(2-butoxyethoxy)ethanol 473.42
    sec-butyl acetate 151.12
    tert-butyl acetate 239.86
    decalin 58.31
    glycerin 466.99
    diglyme 684.41
    acrylic acid 464.26
    isopropyl myristate 122.7
    n-butyric acid 703.13
    acetyl acetate 234.23
    di(2-ethylhexyl) phthalate 144.86
    ethyl propionate 168.43
    nitromethane 667.67
    1,2-diethoxyethane 322.65
    benzonitrile 426.37
    trioctyl phosphate 102.19
    1-bromopropane 417.31
    gamma-valerolactone 689.81
    n-decanol 152.98
    triethyl phosphate 105.7
    4-methyl-2-pentanol 234.79
    propionitrile 434.18
    vinylene carbonate 382.57
    1,1,2-trichlorotrifluoroethane 613.77
    DMS 197.34
    cumene 106.6
    2-octanol 144.73
    2-hexanone 239.39
    octyl acetate 158.22
    limonene 128.26
    1,2-dimethoxyethane 622.11
    ethyl orthosilicate 105.0
    tributyl phosphate 116.49
    diacetone alcohol 324.74
    N,N-dimethylaniline 208.41
    acrylonitrile 491.69
    aniline 422.15
    1,3-propanediol 640.89
    bromobenzene 395.0
    dibromomethane 834.07
    1,1,2,2-tetrachloroethane 977.35
    2-methyl-cyclohexyl acetate 174.8
    tetrabutyl urea 151.72
    diisobutyl methanol 134.29
    2-phenylethanol 298.55
    styrene 210.85
    dioctyl adipate 178.92
    dimethyl sulfate 186.96
    ethyl butyrate 180.79
    methyl lactate 208.19
    butyl lactate 185.24
    diethyl carbonate 147.02
    propanediol butyl ether 404.79
    triethyl orthoformate 144.65
    p-tert-butyltoluene 88.39
    methyl 4-tert-butylbenzoate 235.43
    morpholine 1009.26
    tert-butylamine 563.4
    n-dodecanol 117.34
    dimethoxymethane 386.84
    ethylene carbonate 299.41
    cyrene 269.62
    2-ethoxyethyl acetate 231.19
    2-ethylhexyl acetate 189.1
    1,2,4-trichlorobenzene 374.83
    4-methylpyridine 656.03
    dibutyl ether 195.07
    2,6-dimethyl-4-heptanol 134.29
    DEF 343.66
    dimethyl isosorbide 394.88
    tetrachloroethylene 599.35
    eugenol 272.62
    triacetin 265.48
    span 80 323.45
    1,4-butanediol 302.28
    1,1-dichloroethane 700.44
    2-methyl-1-pentanol 408.59
    methyl formate 271.03
    2-methyl-1-butanol 523.05
    n-decane 36.75
    butyronitrile 514.8
    3,7-dimethyl-1-octanol 224.72
    1-chlorooctane 136.19
    1-chlorotetradecane 59.47
    n-nonane 34.76
    undecane 28.73
    tert-butylcyclohexane 55.5
    cyclooctane 36.2
    cyclopentanol 565.51
    tetrahydropyran 801.93
    tert-amyl methyl ether 251.13
    2,5,8-trioxanonane 516.47
    1-hexene 257.71
    2-isopropoxyethanol 334.27
    2,2,2-trifluoroethanol 212.13
    methyl butyrate 241.57

    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