Ethyl 2-hydroxypentanoate

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  • Identifiers

    CAS number
    6938-26-7

    Molecular formula
    C7H14O3

    SMILES
    CCCC(C(=O)OCC)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fruity 90.79%
    Caramellic 62.98%
    Sweet 53.84%
    Buttery 53.25%
    Winey 49.07%
    Ethereal 38.97%
    Pineapple 38.1%
    Creamy 34.08%
    Milky 31.32%
    Rummy 31.07%

     

    Flavor
    Fruity 77.7%
    Sweet 43.4%
    Creamy 43.08%
    Buttery 37.61%
    Fruit 37.08%
    Waxy 36.92%
    Berry 34.08%
    Grape 33.1%
    Cheese 31.3%
    Butter 30.93%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.1

    pKa est.
    8.41 (weak base)

    Molecular weight
    146.18 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point est.
    183°C

    Flash point

    • 72.73 ˚C est.

  • Synonyms

    • Ethyl 2-hydroxypentanoate
    • Ethyl 2-hydroxyvalerate
    • 6938-26-7
    • EINECS 230-066-8
    • MQGTZMCASHTGBJ-UHFFFAOYSA-
    • NSC 53939
    • RefChem:594423
    • DTXCID701365199
    • 230-066-8
    • 16179-36-5
    • DTXSID80936595
    • InChI=1/C7H14O3/c1-3-5-6(8)7(9)10-4-2/h6,8H,3-5H2,1-2H3
    • Ethyl 2-Hydroxyvalerate ,
    • Pentanoic acid, 2-hydroxy-, ethyl ester
    • MFCD00042730
    • DL-alpha-Hydroxyvaleric acid ethyl ester
    • 2-Hydroxyvaleric Acid Ethyl Ester
    • 2-Hydroxypentanoic Acid Ethyl Ester
    • ethyl2-hydroxypentanate
    • Ethyl 2-hydroxypentanoate #
    • SCHEMBL820658
    • SCHEMBL2486295
    • dl-Ethyl-.alpha.-hydroxy valerate
    • NSC53939
    • NSC-53939
    • Ethyl 2-hydroxyvalerate, >=97.0%
    • AKOS009157587
    • Pentanoic acid,2-hydroxy-,ethyl ester
    • RS-1023
    • SB84422
    • DA-03518
    • CS-0331336
    • E0644
    • NS00044319
    • D90546
    • 6938-26-7

  • Applications

    Ethyl 2-hydroxypentanoate (CAS 6938-26-7) is commonly used as an organic synthesis intermediate and building block for chiral compounds in pharmaceutical and fine chemical manufacturing. It can function as a solvent or co-solvent in chemical processing and serves as a precursor for esters and hydroxy acids in polymer, coating, and specialty chemical formulations. In fragrance and cosmetics, it is used as a fragrance intermediate or formulation component, and in the flavor industry it may be explored as a flavor chemical precursor. It also appears in research and development settings for analytical and synthetic development, with use subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1894.56
    methanol 3757.85
    isopropanol 1339.75
    water 23.79
    ethyl acetate 404.53
    n-propanol 1351.41
    acetone 881.9
    n-butanol 1077.54
    acetonitrile 802.07
    DMF 1682.12
    toluene 135.3
    isobutanol 852.5
    1,4-dioxane 1389.63
    methyl acetate 548.1
    THF 1008.18
    2-butanone 535.64
    n-pentanol 799.47
    sec-butanol 1012.06
    n-hexane 62.77
    ethylene glycol 824.42
    NMP 950.72
    cyclohexane 140.03
    DMSO 1857.42
    n-butyl acetate 447.92
    n-octanol 356.89
    chloroform 1392.63
    n-propyl acetate 353.26
    acetic acid 2310.52
    dichloromethane 1274.56
    cyclohexanone 798.17
    propylene glycol 690.35
    isopropyl acetate 246.52
    DMAc 935.43
    2-ethoxyethanol 1146.02
    isopentanol 709.31
    n-heptane 42.86
    ethyl formate 618.18
    1,2-dichloroethane 805.81
    n-hexanol 662.18
    2-methoxyethanol 1856.81
    isobutyl acetate 211.27
    tetrachloromethane 204.49
    n-pentyl acetate 312.71
    transcutol 1519.41
    n-heptanol 328.4
    ethylbenzene 138.97
    MIBK 233.77
    2-propoxyethanol 907.33
    tert-butanol 1325.89
    MTBE 596.37
    2-butoxyethanol 573.5
    propionic acid 951.85
    o-xylene 137.62
    formic acid 1370.16
    diethyl ether 472.06
    m-xylene 110.14
    p-xylene 195.27
    chlorobenzene 378.96
    dimethyl carbonate 166.53
    n-octane 29.21
    formamide 1258.27
    cyclopentanone 750.95
    2-pentanone 363.66
    anisole 308.79
    cyclopentyl methyl ether 359.09
    gamma-butyrolactone 977.75
    1-methoxy-2-propanol 941.9
    pyridine 748.65
    3-pentanone 253.22
    furfural 1063.76
    n-dodecane 29.53
    diethylene glycol 940.47
    diisopropyl ether 114.31
    tert-amyl alcohol 1046.77
    acetylacetone 392.95
    n-hexadecane 32.72
    acetophenone 334.64
    methyl propionate 334.63
    isopentyl acetate 373.56
    trichloroethylene 1337.07
    n-nonanol 281.72
    cyclohexanol 786.68
    benzyl alcohol 432.72
    2-ethylhexanol 334.26
    isooctanol 239.24
    dipropyl ether 221.79
    1,2-dichlorobenzene 358.65
    ethyl lactate 244.73
    propylene carbonate 541.32
    n-methylformamide 1127.72
    2-pentanol 551.18
    n-pentane 64.43
    1-propoxy-2-propanol 554.01
    1-methoxy-2-propyl acetate 304.61
    2-(2-methoxypropoxy) propanol 395.83
    mesitylene 90.49
    ε-caprolactone 728.96
    p-cymene 110.82
    epichlorohydrin 983.55
    1,1,1-trichloroethane 553.94
    2-aminoethanol 1179.91
    morpholine-4-carbaldehyde 1006.19
    sulfolane 1153.05
    2,2,4-trimethylpentane 47.28
    2-methyltetrahydrofuran 654.55
    n-hexyl acetate 440.31
    isooctane 31.02
    2-(2-butoxyethoxy)ethanol 589.14
    sec-butyl acetate 188.18
    tert-butyl acetate 273.79
    decalin 63.1
    glycerin 950.35
    diglyme 1013.38
    acrylic acid 923.43
    isopropyl myristate 146.83
    n-butyric acid 1061.5
    acetyl acetate 275.79
    di(2-ethylhexyl) phthalate 173.89
    ethyl propionate 238.61
    nitromethane 1833.48
    1,2-diethoxyethane 462.03
    benzonitrile 514.95
    trioctyl phosphate 144.96
    1-bromopropane 421.83
    gamma-valerolactone 1099.97
    n-decanol 200.49
    triethyl phosphate 151.14
    4-methyl-2-pentanol 267.84
    propionitrile 641.49
    vinylene carbonate 593.88
    1,1,2-trichlorotrifluoroethane 982.78
    DMS 264.5
    cumene 112.84
    2-octanol 245.27
    2-hexanone 362.59
    octyl acetate 212.36
    limonene 170.35
    1,2-dimethoxyethane 1384.2
    ethyl orthosilicate 145.57
    tributyl phosphate 165.6
    diacetone alcohol 407.93
    N,N-dimethylaniline 229.6
    acrylonitrile 862.44
    aniline 344.64
    1,3-propanediol 1367.3
    bromobenzene 331.48
    dibromomethane 819.37
    1,1,2,2-tetrachloroethane 1129.03
    2-methyl-cyclohexyl acetate 235.97
    tetrabutyl urea 212.23
    diisobutyl methanol 176.69
    2-phenylethanol 354.24
    styrene 189.25
    dioctyl adipate 229.72
    dimethyl sulfate 296.03
    ethyl butyrate 262.12
    methyl lactate 326.03
    butyl lactate 284.58
    diethyl carbonate 208.5
    propanediol butyl ether 573.27
    triethyl orthoformate 202.88
    p-tert-butyltoluene 105.71
    methyl 4-tert-butylbenzoate 295.04
    morpholine 1393.64
    tert-butylamine 756.88
    n-dodecanol 150.67
    dimethoxymethane 653.13
    ethylene carbonate 488.53
    cyrene 353.55
    2-ethoxyethyl acetate 343.29
    2-ethylhexyl acetate 264.64
    1,2,4-trichlorobenzene 402.06
    4-methylpyridine 595.49
    dibutyl ether 251.85
    2,6-dimethyl-4-heptanol 176.69
    DEF 590.47
    dimethyl isosorbide 511.16
    tetrachloroethylene 882.32
    eugenol 343.29
    triacetin 316.48
    span 80 387.03
    1,4-butanediol 722.35
    1,1-dichloroethane 678.37
    2-methyl-1-pentanol 597.89
    methyl formate 865.62
    2-methyl-1-butanol 700.42
    n-decane 47.33
    butyronitrile 658.72
    3,7-dimethyl-1-octanol 272.48
    1-chlorooctane 172.72
    1-chlorotetradecane 71.05
    n-nonane 46.07
    undecane 36.35
    tert-butylcyclohexane 55.8
    cyclooctane 33.91
    cyclopentanol 772.43
    tetrahydropyran 916.99
    tert-amyl methyl ether 380.38
    2,5,8-trioxanonane 691.12
    1-hexene 237.32
    2-isopropoxyethanol 614.52
    2,2,2-trifluoroethanol 546.92
    methyl butyrate 429.66

    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