8-Hydroxy-7-methoxy-2H-1-benzopyran-2-one

Overview IFRA Request a quote

  • Identifiers

    CAS number
    19492-03-6

    Molecular formula
    C10H8O4

    SMILES
    COC1=C(C2=C(C=C1)C=CC(=O)O2)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Sweet 70.34%
    Vanilla 57.52%
    Phenolic 49.67%
    Caramellic 48.06%
    Fruity 44.0%
    Burnt 41.8%
    Creamy 39.17%
    Powdery 37.49%
    Balsamic 37.45%
    Spicy 31.11%

     

    Flavor
    Sweet 68.71%
    Bitter 65.13%
    Vanilla 40.74%
    Woody 34.1%
    Creamy 33.87%
    Tonka 31.62%
    Powdery 31.05%
    Balsamic 28.78%
    Caramel 28.69%
    Balsam 26.97%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    1.5

    pKa est.
    7.17 (neutral)

    Molecular weight
    192.17 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    371°C

    Melting point expt.

    • 173 - 174 °C

    Flash point

    • 164.75 ˚C est.

  • Synonyms

    • 19492-03-6
    • 8-hydroxy-7-methoxy-2H-chromen-2-one
    • Daphnetin-7-methylether
    • 8-Hydroxy-7-methoxy-2H-1-benzopyran-2-one
    • 2H-1-Benzopyran-2-one, 8-hydroxy-7-methoxy-
    • DTXSID00173142
    • RefChem:914577
    • DTXCID4095633
    • 8-Hydroxy-7-methoxycoumarin
    • 8-hydroxy-7-methoxychromen-2-one
    • Daphnetin 7-methyl ether
    • Herniarin, 8-hydroxy-
    • Daphnetin-7-methyl ether
    • MFCD00075652
    • 7-methoxy-8-hydroxycoumarin
    • H43B8D33LB
    • DAPHNETIN 7-METHYL ETHE
    • CHEMBL4779645
    • 8-Hydroxy-7-methoxy-chromen-2-one
    • Coumarin Impurity 3
    • Daphnetin 7-methylether
    • daphnetin 7-O-methyl ether
    • UNII-H43B8D33LB
    • 8-Hydroxy-7-methoxy coumarin
    • orb1698430
    • SCHEMBL5085582
    • SCHEMBL31169352
    • CHEBI:173919
    • KIGCGZUAVODHMD-UHFFFAOYSA-N
    • 8-Hydroxy-7-methoxycoumarin, 8CI
    • HY-N4282
    • BDBM50555093
    • AKOS024015257
    • FH66318
    • AS-62967
    • DA-52308
    • 7-METHOXY-8-OXIDANYL-CHROMEN-2-ONE
    • CS-0032633
    • ST50331503
    • F17709
    • 8-Hydroxy-7-methoxy-2H-1-benzopyran-2-one, 9CI
    • 19492-03-6

  • Applications

    Chemical name: 8-Hydroxy-7-methoxy-2H-1-benzopyran-2-one; CAS number: 19492-03-6. 8-Hydroxy-7-methoxy-2H-1-benzopyran-2-one is primarily used as a synthetic intermediate and building block for chromone- and flavonoid-like structures in pharmaceutical research and development; it may be employed as a precursor to chromone-based compounds and is often evaluated for use in pharmaceuticals as leads for drug discovery. In cosmetics and personal care, the compound may be evaluated as a fragrance-related ingredient or as a precursor to chromone-derived actives for cosmetic formulations. In coatings and inks, it can serve as a chromone-derived intermediate for specialty additives or dyes used in paint and printing formulations. In industrial manufacturing, it functions as an intermediate for the synthesis of more complex chromone-containing materials. In cleaning and household products, it may appear as a fragrance component or niche intermediate in proprietary formulations developed by manufacturers.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 5.04
    methanol 7.13
    isopropanol 4.05
    water 0.03
    ethyl acetate 12.29
    n-propanol 4.55
    acetone 17.58
    n-butanol 4.43
    acetonitrile 8.09
    DMF 73.33
    toluene 3.99
    isobutanol 3.72
    1,4-dioxane 29.51
    methyl acetate 16.4
    THF 66.92
    2-butanone 16.07
    n-pentanol 3.8
    sec-butanol 4.33
    n-hexane 0.18
    ethylene glycol 5.05
    NMP 42.0
    cyclohexane 0.4
    DMSO 98.59
    n-butyl acetate 10.73
    n-octanol 3.77
    chloroform 2.98
    n-propyl acetate 11.08
    acetic acid 12.72
    dichloromethane 8.51
    cyclohexanone 18.45
    propylene glycol 1.86
    isopropyl acetate 9.81
    DMAc 65.0
    2-ethoxyethanol 21.57
    isopentanol 6.81
    n-heptane 0.64
    ethyl formate 7.12
    1,2-dichloroethane 14.56
    n-hexanol 5.61
    2-methoxyethanol 39.35
    isobutyl acetate 5.08
    tetrachloromethane 0.76
    n-pentyl acetate 8.51
    transcutol 91.98
    n-heptanol 4.54
    ethylbenzene 3.27
    MIBK 10.59
    2-propoxyethanol 21.73
    tert-butanol 13.78
    MTBE 11.84
    2-butoxyethanol 14.82
    propionic acid 6.28
    o-xylene 5.03
    formic acid 12.02
    diethyl ether 11.8
    m-xylene 3.66
    p-xylene 4.05
    chlorobenzene 3.84
    dimethyl carbonate 14.3
    n-octane 0.3
    formamide 40.08
    cyclopentanone 27.96
    2-pentanone 12.21
    anisole 14.26
    cyclopentyl methyl ether 16.77
    gamma-butyrolactone 35.4
    1-methoxy-2-propanol 21.71
    pyridine 20.12
    3-pentanone 12.59
    furfural 41.69
    n-dodecane 0.31
    diethylene glycol 26.53
    diisopropyl ether 3.72
    tert-amyl alcohol 11.17
    acetylacetone 23.24
    n-hexadecane 0.38
    acetophenone 15.79
    methyl propionate 14.42
    isopentyl acetate 11.34
    trichloroethylene 17.92
    n-nonanol 4.26
    cyclohexanol 5.72
    benzyl alcohol 9.6
    2-ethylhexanol 5.48
    isooctanol 4.41
    dipropyl ether 8.12
    1,2-dichlorobenzene 5.79
    ethyl lactate 7.08
    propylene carbonate 12.44
    n-methylformamide 22.63
    2-pentanol 3.84
    n-pentane 0.23
    1-propoxy-2-propanol 14.68
    1-methoxy-2-propyl acetate 19.71
    2-(2-methoxypropoxy) propanol 22.17
    mesitylene 2.76
    ε-caprolactone 16.71
    p-cymene 4.6
    epichlorohydrin 49.77
    1,1,1-trichloroethane 4.06
    2-aminoethanol 6.17
    morpholine-4-carbaldehyde 55.74
    sulfolane 57.17
    2,2,4-trimethylpentane 0.4
    2-methyltetrahydrofuran 25.33
    n-hexyl acetate 10.76
    isooctane 0.25
    2-(2-butoxyethoxy)ethanol 26.86
    sec-butyl acetate 7.4
    tert-butyl acetate 16.43
    decalin 0.56
    glycerin 9.13
    diglyme 73.93
    acrylic acid 7.75
    isopropyl myristate 5.18
    n-butyric acid 7.43
    acetyl acetate 8.93
    di(2-ethylhexyl) phthalate 6.04
    ethyl propionate 11.85
    nitromethane 44.35
    1,2-diethoxyethane 23.94
    benzonitrile 8.66
    trioctyl phosphate 4.06
    1-bromopropane 4.2
    gamma-valerolactone 41.31
    n-decanol 3.41
    triethyl phosphate 9.07
    4-methyl-2-pentanol 3.95
    propionitrile 7.58
    vinylene carbonate 12.22
    1,1,2-trichlorotrifluoroethane 26.11
    DMS 15.53
    cumene 3.07
    2-octanol 3.08
    2-hexanone 10.78
    octyl acetate 6.24
    limonene 5.61
    1,2-dimethoxyethane 57.01
    ethyl orthosilicate 8.4
    tributyl phosphate 5.24
    diacetone alcohol 24.97
    N,N-dimethylaniline 11.94
    acrylonitrile 13.07
    aniline 8.15
    1,3-propanediol 10.62
    bromobenzene 2.98
    dibromomethane 4.15
    1,1,2,2-tetrachloroethane 12.05
    2-methyl-cyclohexyl acetate 10.88
    tetrabutyl urea 8.85
    diisobutyl methanol 4.73
    2-phenylethanol 11.61
    styrene 3.4
    dioctyl adipate 8.92
    dimethyl sulfate 28.86
    ethyl butyrate 10.97
    methyl lactate 10.5
    butyl lactate 7.53
    diethyl carbonate 8.88
    propanediol butyl ether 10.7
    triethyl orthoformate 10.4
    p-tert-butyltoluene 4.46
    methyl 4-tert-butylbenzoate 16.63
    morpholine 31.63
    tert-butylamine 5.82
    n-dodecanol 2.68
    dimethoxymethane 50.49
    ethylene carbonate 9.15
    cyrene 19.5
    2-ethoxyethyl acetate 17.83
    2-ethylhexyl acetate 8.51
    1,2,4-trichlorobenzene 8.04
    4-methylpyridine 13.7
    dibutyl ether 6.88
    2,6-dimethyl-4-heptanol 4.73
    DEF 22.06
    dimethyl isosorbide 42.36
    tetrachloroethylene 10.36
    eugenol 16.87
    triacetin 15.71
    span 80 11.01
    1,4-butanediol 3.56
    1,1-dichloroethane 3.96
    2-methyl-1-pentanol 5.57
    methyl formate 19.9
    2-methyl-1-butanol 5.37
    n-decane 0.52
    butyronitrile 5.85
    3,7-dimethyl-1-octanol 4.92
    1-chlorooctane 2.4
    1-chlorotetradecane 1.15
    n-nonane 0.41
    undecane 0.4
    tert-butylcyclohexane 0.51
    cyclooctane 0.21
    cyclopentanol 6.45
    tetrahydropyran 15.24
    tert-amyl methyl ether 11.11
    2,5,8-trioxanonane 49.57
    1-hexene 1.25
    2-isopropoxyethanol 14.47
    2,2,2-trifluoroethanol 8.47
    methyl butyrate 13.46

    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