2-(Thiophen-2-yl)acetaldehyde

Overview IFRA Request a quote

  • Identifiers

    CAS number
    15022-15-8

    Molecular formula
    C6H6OS

    SMILES
    C1=CSC(=C1)CC=O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Nutty 48.33%
    Sulfurous 43.83%
    Fruity 40.37%
    Roasted 40.11%
    Green 38.41%
    Coffee 36.9%
    Burnt 36.74%
    Alliaceous 34.14%
    Pungent 33.62%
    Meaty 32.03%

     

    Flavor
    Sulfur 43.01%
    Sulfurous 41.4%
    Horseradish 35.49%
    Garlic 32.79%
    Vegetable 31.98%
    Pungent 31.72%
    Coffee 29.14%
    Bitter 29.08%
    Fatty 29.04%
    Green 28.32%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.2

    pKa est.
    5.27 (weak acid)

    Molecular weight
    126.18 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderate

    Boiling point est.
    218°C

    Flash point

    • 71.34 ˚C est.

  • Synonyms

    • 2-(thiophen-2-yl)acetaldehyde
    • RefChem:462392
    • 870-775-5
    • 15022-15-8
    • 2-Thiopheneacetaldehyde
    • 2-thiophen-2-ylacetaldehyde
    • thienylethanal
    • 2-thienylacetaldehyde
    • MFCD11592444
    • 2-(2-thienyl)acetaldehyde
    • thiophene-2-acetaldehyde
    • (Thiophen-2-yl)acetaldehyde
    • SCHEMBL149773
    • SCHEMBL286875
    • SCHEMBL27523738
    • DTXSID60424006
    • AKOS011897131
    • AS-50017
    • DA-10014
    • CS-0038150
    • EN300-300723
    • O10539
    • Z993017816
    • 15022-15-8

  • Applications

    2-(Thiophen-2-yl)acetaldehyde (CAS 15022-15-8) is a versatile intermediate in organic synthesis, enabling access to a range of heteroaromatic scaffolds. It is commonly evaluated as a fragrance and flavor precursor to introduce thiophene motifs with nuanced aroma notes. In materials science, it serves as a building block for thiophene-containing polymers and related materials, including conductive or optoelectronic polymers. It can also act as an aldehyde-building block in carbon–carbon bond-forming reactions such as aldol-type condensations and cross-coupling routes, broadening synthetic routes for specialty chemicals.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 192.73
    methanol 288.96
    isopropanol 123.36
    water 7.23
    ethyl acetate 283.17
    n-propanol 161.81
    acetone 304.32
    n-butanol 113.78
    acetonitrile 264.5
    DMF 1042.02
    toluene 172.32
    isobutanol 97.69
    1,4-dioxane 642.31
    methyl acetate 343.22
    THF 310.45
    2-butanone 257.71
    n-pentanol 94.96
    sec-butanol 102.46
    n-hexane 5.08
    ethylene glycol 180.85
    NMP 469.6
    cyclohexane 11.92
    DMSO 578.92
    n-butyl acetate 107.21
    n-octanol 66.53
    chloroform 581.09
    n-propyl acetate 129.57
    acetic acid 219.98
    dichloromethane 426.29
    cyclohexanone 277.53
    propylene glycol 126.24
    isopropyl acetate 116.87
    DMAc 630.99
    2-ethoxyethanol 284.79
    isopentanol 84.97
    n-heptane 10.75
    ethyl formate 168.98
    1,2-dichloroethane 289.56
    n-hexanol 107.54
    2-methoxyethanol 508.41
    isobutyl acetate 82.99
    tetrachloromethane 77.52
    n-pentyl acetate 76.05
    transcutol 875.09
    n-heptanol 58.06
    ethylbenzene 61.99
    MIBK 99.76
    2-propoxyethanol 273.47
    tert-butanol 126.17
    MTBE 96.07
    2-butoxyethanol 150.94
    propionic acid 212.76
    o-xylene 97.93
    formic acid 174.77
    diethyl ether 154.88
    m-xylene 97.6
    p-xylene 78.78
    chlorobenzene 200.8
    dimethyl carbonate 177.64
    n-octane 4.94
    formamide 288.01
    cyclopentanone 303.44
    2-pentanone 169.24
    anisole 208.85
    cyclopentyl methyl ether 162.42
    gamma-butyrolactone 367.47
    1-methoxy-2-propanol 315.29
    pyridine 455.28
    3-pentanone 172.87
    furfural 490.81
    n-dodecane 6.16
    diethylene glycol 337.43
    diisopropyl ether 38.48
    tert-amyl alcohol 93.45
    acetylacetone 272.63
    n-hexadecane 7.03
    acetophenone 177.8
    methyl propionate 278.05
    isopentyl acetate 87.72
    trichloroethylene 593.44
    n-nonanol 62.16
    cyclohexanol 111.35
    benzyl alcohol 165.77
    2-ethylhexanol 67.57
    isooctanol 47.81
    dipropyl ether 84.04
    1,2-dichlorobenzene 174.38
    ethyl lactate 95.57
    propylene carbonate 190.44
    n-methylformamide 437.9
    2-pentanol 73.48
    n-pentane 6.34
    1-propoxy-2-propanol 179.95
    1-methoxy-2-propyl acetate 173.19
    2-(2-methoxypropoxy) propanol 187.34
    mesitylene 56.25
    ε-caprolactone 236.78
    p-cymene 40.74
    epichlorohydrin 403.07
    1,1,1-trichloroethane 256.7
    2-aminoethanol 205.79
    morpholine-4-carbaldehyde 684.44
    sulfolane 370.09
    2,2,4-trimethylpentane 6.16
    2-methyltetrahydrofuran 215.64
    n-hexyl acetate 109.05
    isooctane 5.58
    2-(2-butoxyethoxy)ethanol 262.89
    sec-butyl acetate 83.89
    tert-butyl acetate 113.52
    decalin 11.93
    glycerin 218.42
    diglyme 465.78
    acrylic acid 235.84
    isopropyl myristate 52.33
    n-butyric acid 169.82
    acetyl acetate 172.15
    di(2-ethylhexyl) phthalate 58.27
    ethyl propionate 131.17
    nitromethane 574.11
    1,2-diethoxyethane 201.6
    benzonitrile 194.7
    trioctyl phosphate 40.27
    1-bromopropane 115.17
    gamma-valerolactone 532.72
    n-decanol 48.69
    triethyl phosphate 60.49
    4-methyl-2-pentanol 50.35
    propionitrile 190.1
    vinylene carbonate 246.31
    1,1,2-trichlorotrifluoroethane 401.71
    DMS 167.47
    cumene 41.21
    2-octanol 39.37
    2-hexanone 111.86
    octyl acetate 64.78
    limonene 54.24
    1,2-dimethoxyethane 368.43
    ethyl orthosilicate 57.2
    tributyl phosphate 49.24
    diacetone alcohol 163.96
    N,N-dimethylaniline 129.05
    acrylonitrile 297.47
    aniline 214.57
    1,3-propanediol 220.77
    bromobenzene 191.99
    dibromomethane 238.96
    1,1,2,2-tetrachloroethane 403.8
    2-methyl-cyclohexyl acetate 79.06
    tetrabutyl urea 75.51
    diisobutyl methanol 46.54
    2-phenylethanol 140.71
    styrene 98.11
    dioctyl adipate 77.85
    dimethyl sulfate 275.99
    ethyl butyrate 92.47
    methyl lactate 170.82
    butyl lactate 84.34
    diethyl carbonate 74.17
    propanediol butyl ether 157.47
    triethyl orthoformate 77.86
    p-tert-butyltoluene 40.9
    methyl 4-tert-butylbenzoate 130.37
    morpholine 565.35
    tert-butylamine 70.72
    n-dodecanol 39.21
    dimethoxymethane 414.06
    ethylene carbonate 177.63
    cyrene 178.57
    2-ethoxyethyl acetate 159.12
    2-ethylhexyl acetate 72.58
    1,2,4-trichlorobenzene 219.28
    4-methylpyridine 363.51
    dibutyl ether 68.88
    2,6-dimethyl-4-heptanol 46.54
    DEF 308.09
    dimethyl isosorbide 253.0
    tetrachloroethylene 298.94
    eugenol 153.98
    triacetin 153.73
    span 80 139.81
    1,4-butanediol 103.72
    1,1-dichloroethane 252.5
    2-methyl-1-pentanol 73.63
    methyl formate 312.43
    2-methyl-1-butanol 82.51
    n-decane 8.81
    butyronitrile 130.05
    3,7-dimethyl-1-octanol 66.99
    1-chlorooctane 40.66
    1-chlorotetradecane 20.3
    n-nonane 7.68
    undecane 7.17
    tert-butylcyclohexane 10.84
    cyclooctane 5.58
    cyclopentanol 122.54
    tetrahydropyran 284.6
    tert-amyl methyl ether 82.22
    2,5,8-trioxanonane 357.56
    1-hexene 27.88
    2-isopropoxyethanol 186.39
    2,2,2-trifluoroethanol 147.44
    methyl butyrate 146.02

    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