5-Ethyl-2-(1-pyrrolidinyl)-2-cyclopenten-1-one

Overview IFRA Request a quote

  • Identifiers

    CAS number
    97826-60-3

    Molecular formula
    C11H17NO

    SMILES
    CCC1CC=C(C1=O)N2CCCC2

    Safety labels

  • Odor profile

    Fragrance
    Nutty 40.66%
    Roasted 39.04%
    Popcorn 34.39%
    Burnt 28.15%
    Caramellic 27.95%
    Herbal 26.38%
    Woody 25.33%
    Mint 24.27%
    Earthy 23.42%
    Spicy 22.77%

     

    Flavor
    Bitter 58.76%
    Lovage 21.24%
    Cedarleaf 20.85%
    Basil 20.2%
    Animal 20.19%
    Herbal 20.13%
    Alkaline 20.04%
    Shrimp 19.93%
    Leaves 19.63%
    Cereal 19.31%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    2.3

    pKa est.
    7.07 (neutral)

    Molecular weight
    179.26 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    271°C

    Flash point

    • 120.82 ˚C est.

  • Synonyms

    • 5-ethyl-2-(1-pyrrolidinyl)-2-cyclopenten-1-one
    • 5-ethyl-2-(pyrrolidin-1-yl)cyclopent-2-en-1-one
    • 97826-60-3
    • RefChem:102545
    • SCHEMBL6129224
    • CHEBI:173506
    • DTXSID801246556
    • 5-ethyl-2-pyrrolidin-1-ylcyclopent-2-en-1-one
    • 97826-60-3

  • Applications

    5-Ethyl-2-(1-pyrrolidinyl)-2-cyclopenten-1-one (CAS 97826-60-3) is commonly used as a fragrance-related intermediate and odorant in perfumery; it may be incorporated into cosmetics and personal care products as a fragrance ingredient to impart or stabilize specific notes, and it can also find use in household products for scent options. In industrial manufacturing, it serves as a specialty chemical intermediate for the synthesis of fragrance compounds, and it may be considered as a component in coatings and inks as a fragrance additive; the compound can also serve as a building block for further chemical synthesis in fragrance-related product development.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 731.62
    methanol 1098.27
    isopropanol 536.61
    water 9.81
    ethyl acetate 359.11
    n-propanol 567.06
    acetone 441.75
    n-butanol 538.58
    acetonitrile 468.47
    DMF 632.23
    toluene 265.55
    isobutanol 465.05
    1,4-dioxane 481.78
    methyl acetate 333.27
    THF 554.11
    2-butanone 375.9
    n-pentanol 333.64
    sec-butanol 400.58
    n-hexane 15.88
    ethylene glycol 219.84
    NMP 490.53
    cyclohexane 46.38
    DMSO 393.45
    n-butyl acetate 329.44
    n-octanol 178.9
    chloroform 2640.98
    n-propyl acetate 242.43
    acetic acid 826.58
    dichloromethane 2012.9
    cyclohexanone 593.06
    propylene glycol 237.84
    isopropyl acetate 269.88
    DMAc 426.78
    2-ethoxyethanol 441.0
    isopentanol 462.05
    n-heptane 13.39
    ethyl formate 499.98
    1,2-dichloroethane 783.85
    n-hexanol 308.48
    2-methoxyethanol 704.18
    isobutyl acetate 177.8
    tetrachloromethane 334.55
    n-pentyl acetate 235.34
    transcutol 909.36
    n-heptanol 176.5
    ethylbenzene 138.67
    MIBK 225.84
    2-propoxyethanol 477.53
    tert-butanol 388.15
    MTBE 215.56
    2-butoxyethanol 320.09
    propionic acid 477.52
    o-xylene 161.63
    formic acid 386.2
    diethyl ether 216.41
    m-xylene 183.29
    p-xylene 183.22
    chlorobenzene 597.12
    dimethyl carbonate 149.9
    n-octane 10.89
    formamide 406.05
    cyclopentanone 591.88
    2-pentanone 302.41
    anisole 249.85
    cyclopentyl methyl ether 254.04
    gamma-butyrolactone 736.43
    1-methoxy-2-propanol 430.39
    pyridine 780.35
    3-pentanone 210.98
    furfural 861.32
    n-dodecane 14.92
    diethylene glycol 429.55
    diisopropyl ether 74.04
    tert-amyl alcohol 294.98
    acetylacetone 326.35
    n-hexadecane 17.15
    acetophenone 278.76
    methyl propionate 248.57
    isopentyl acetate 293.52
    trichloroethylene 1905.55
    n-nonanol 149.54
    cyclohexanol 395.44
    benzyl alcohol 341.78
    2-ethylhexanol 160.68
    isooctanol 148.28
    dipropyl ether 95.67
    1,2-dichlorobenzene 494.12
    ethyl lactate 170.17
    propylene carbonate 561.38
    n-methylformamide 504.86
    2-pentanol 294.32
    n-pentane 23.66
    1-propoxy-2-propanol 284.0
    1-methoxy-2-propyl acetate 251.35
    2-(2-methoxypropoxy) propanol 228.74
    mesitylene 117.76
    ε-caprolactone 537.06
    p-cymene 99.52
    epichlorohydrin 800.38
    1,1,1-trichloroethane 774.64
    2-aminoethanol 400.01
    morpholine-4-carbaldehyde 538.01
    sulfolane 604.57
    2,2,4-trimethylpentane 22.13
    2-methyltetrahydrofuran 388.57
    n-hexyl acetate 305.12
    isooctane 19.82
    2-(2-butoxyethoxy)ethanol 338.87
    sec-butyl acetate 171.44
    tert-butyl acetate 210.86
    decalin 32.2
    glycerin 329.97
    diglyme 568.46
    acrylic acid 488.31
    isopropyl myristate 111.6
    n-butyric acid 763.26
    acetyl acetate 310.33
    di(2-ethylhexyl) phthalate 140.02
    ethyl propionate 196.3
    nitromethane 751.12
    1,2-diethoxyethane 248.45
    benzonitrile 576.11
    trioctyl phosphate 95.73
    1-bromopropane 406.58
    gamma-valerolactone 744.68
    n-decanol 106.54
    triethyl phosphate 108.66
    4-methyl-2-pentanol 180.49
    propionitrile 440.47
    vinylene carbonate 626.01
    1,1,2-trichlorotrifluoroethane 678.04
    DMS 214.31
    cumene 106.33
    2-octanol 124.48
    2-hexanone 219.1
    octyl acetate 146.6
    limonene 116.17
    1,2-dimethoxyethane 464.73
    ethyl orthosilicate 103.93
    tributyl phosphate 113.2
    diacetone alcohol 247.42
    N,N-dimethylaniline 162.97
    acrylonitrile 595.87
    aniline 401.02
    1,3-propanediol 545.65
    bromobenzene 616.85
    dibromomethane 1176.16
    1,1,2,2-tetrachloroethane 1198.15
    2-methyl-cyclohexyl acetate 169.7
    tetrabutyl urea 136.68
    diisobutyl methanol 95.15
    2-phenylethanol 287.65
    styrene 200.14
    dioctyl adipate 152.49
    dimethyl sulfate 208.21
    ethyl butyrate 200.44
    methyl lactate 195.99
    butyl lactate 202.72
    diethyl carbonate 165.01
    propanediol butyl ether 303.07
    triethyl orthoformate 147.24
    p-tert-butyltoluene 86.96
    methyl 4-tert-butylbenzoate 236.17
    morpholine 544.34
    tert-butylamine 240.2
    n-dodecanol 79.12
    dimethoxymethane 312.94
    ethylene carbonate 505.02
    cyrene 235.25
    2-ethoxyethyl acetate 291.48
    2-ethylhexyl acetate 216.04
    1,2,4-trichlorobenzene 556.38
    4-methylpyridine 683.14
    dibutyl ether 134.93
    2,6-dimethyl-4-heptanol 95.15
    DEF 321.55
    dimethyl isosorbide 322.5
    tetrachloroethylene 919.1
    eugenol 266.21
    triacetin 249.68
    span 80 214.1
    1,4-butanediol 259.55
    1,1-dichloroethane 938.01
    2-methyl-1-pentanol 294.91
    methyl formate 448.98
    2-methyl-1-butanol 421.74
    n-decane 22.4
    butyronitrile 532.54
    3,7-dimethyl-1-octanol 159.41
    1-chlorooctane 112.53
    1-chlorotetradecane 46.54
    n-nonane 19.38
    undecane 17.72
    tert-butylcyclohexane 28.78
    cyclooctane 15.55
    cyclopentanol 361.81
    tetrahydropyran 400.59
    tert-amyl methyl ether 144.77
    2,5,8-trioxanonane 339.41
    1-hexene 84.11
    2-isopropoxyethanol 278.36
    2,2,2-trifluoroethanol 334.87
    methyl butyrate 292.49

    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