Pratol

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  • Identifiers

    CAS number
    487-24-1

    Molecular formula
    C16H12O4

    SMILES
    COC1=CC=C(C=C1)C2=CC(=O)C3=C(O2)C=C(C=C3)O

    Safety labels

  • Odor profile

    Fragrance
    Sweet 65.48%
    Phenolic 60.85%
    Vanilla 40.31%
    Coumarinic 36.53%
    Powdery 35.69%
    Medicinal 32.99%
    Balsamic 32.78%
    Nutty 32.37%
    Animal 30.03%
    Aromatic 29.95%

     

    Flavor
    Bitter 91.35%
    Tonka 21.74%
    Balsam 20.49%
    Very strong 19.98%
    Lovage 19.77%
    Indole 19.68%
    Curry 19.57%
    Tarragon 19.52%
    Parsley 19.49%
    Aniseed 19.37%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    3.6

    pKa est.
    8.27 (weak base)

    Molecular weight
    268.26 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    520°C

    Flash point

    • 193.81 ˚C est.

  • Synonyms

    • Pratol
    • 487-24-1
    • 7-hydroxy-2-(4-methoxyphenyl)chromen-4-one
    • KU5R959MO7
    • NSC-123414
    • DTXSID20197587
    • RefChem:1096581
    • DTXCID80120078
    • 207-653-2
    • 7-Hydroxy-4'-methoxyflavone
    • 7-Hydroxy-2-(4-methoxyphenyl)-4H-chromen-4-one
    • C.I. 75570
    • 4H-1-Benzopyran-4-one, 7-hydroxy-2-(4-methoxyphenyl)-
    • Flavone, 7-hydroxy-4'-methoxy-
    • MFCD00016937
    • 487-17-2
    • 4'-methoxy-7-hydroxyflavone
    • 7-Hydroxy-2-(4-methoxyphenyl)-4H-1-benzopyran-4-one
    • MLS002707301
    • NSC123414
    • 7-Hydroxy-4-methoxyflavone
    • EINECS 207-653-2
    • NSC 123414
    • BRN 0237239
    • UNII-KU5R959MO7
    • 7-Hydroxy-2-(4-methoxyphenyl)-4-benzopyrone
    • 4hl5
    • 7-Hydroxy-flavone, 5h
    • Oprea1_854602
    • CHEMBL16751
    • SCHEMBL534596
    • orb1297126
    • SCHEMBL30120666
    • BDBM85573
    • HY-N8719
    • TNP00065
    • EBC-03808
    • AKOS004110700
    • CCG-208438
    • FP67654
    • FS-6829
    • NCGC00017200-01
    • NCGC00017200-02
    • NCGC00017200-03
    • NCGC00142412-01
    • NCGC00142412-02
    • SMR001488172
    • ST055366
    • CS-0148969
    • NS00021172
    • EN300-179336
    • G87215
    • AN-829/40761415
    • SR-05000002252
    • 7-Hydroxy-2-(4-methoxyphenyl)-4H-chromen-4-one #
    • SR-05000002252-2
    • BRD-K35651673-001-05-9
    • Q15424797
    • Z1846974262
    • 15W
    • 487-24-1

  • Applications

    Pratol (CAS 487-24-1) is used primarily as an aroma ingredient and often functions as an intermediate in the synthesis of fragrance compounds. In perfumery, it may serve as an odorant or a fixative. In cosmetics and personal care, it is evaluated as a fragrance ingredient; in household and cleaning products, it can provide fragrance notes as an additive. In industrial settings, it may be used as an intermediate in fragrance syntheses and may be considered as an additive for coatings and inks. It could also be evaluated for applications in polymers/plastics, subject to formulation requirements and local regulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 0.93
    methanol 0.81
    isopropanol 1.03
    water 0.0
    ethyl acetate 1.92
    n-propanol 1.4
    acetone 3.17
    n-butanol 1.18
    acetonitrile 2.13
    DMF 17.18
    toluene 0.56
    isobutanol 1.08
    1,4-dioxane 16.47
    methyl acetate 4.71
    THF 38.66
    2-butanone 5.8
    n-pentanol 1.2
    sec-butanol 1.59
    n-hexane 0.01
    ethylene glycol 2.22
    NMP 10.4
    cyclohexane 0.01
    DMSO 93.74
    n-butyl acetate 2.15
    n-octanol 0.44
    chloroform 0.9
    n-propyl acetate 2.97
    acetic acid 5.17
    dichloromethane 1.89
    cyclohexanone 7.07
    propylene glycol 3.52
    isopropyl acetate 2.2
    DMAc 37.34
    2-ethoxyethanol 13.54
    isopentanol 1.62
    n-heptane 0.03
    ethyl formate 1.61
    1,2-dichloroethane 2.46
    n-hexanol 0.65
    2-methoxyethanol 21.35
    isobutyl acetate 2.24
    tetrachloromethane 0.06
    n-pentyl acetate 1.52
    transcutol 145.91
    n-heptanol 0.63
    ethylbenzene 0.39
    MIBK 2.6
    2-propoxyethanol 11.88
    tert-butanol 2.2
    MTBE 1.93
    2-butoxyethanol 5.6
    propionic acid 3.24
    o-xylene 0.47
    formic acid 3.0
    diethyl ether 1.0
    m-xylene 0.38
    p-xylene 0.6
    chlorobenzene 0.82
    dimethyl carbonate 3.81
    n-octane 0.01
    formamide 9.4
    cyclopentanone 13.21
    2-pentanone 2.39
    anisole 4.22
    cyclopentyl methyl ether 3.9
    gamma-butyrolactone 16.95
    1-methoxy-2-propanol 15.09
    pyridine 8.93
    3-pentanone 2.22
    furfural 18.31
    n-dodecane 0.03
    diethylene glycol 16.68
    diisopropyl ether 0.41
    tert-amyl alcohol 2.2
    acetylacetone 7.67
    n-hexadecane 0.04
    acetophenone 5.02
    methyl propionate 3.1
    isopentyl acetate 3.3
    trichloroethylene 6.09
    n-nonanol 0.62
    cyclohexanol 1.61
    benzyl alcohol 3.96
    2-ethylhexanol 0.87
    isooctanol 0.79
    dipropyl ether 1.97
    1,2-dichlorobenzene 1.17
    ethyl lactate 3.86
    propylene carbonate 4.78
    n-methylformamide 5.39
    2-pentanol 0.89
    n-pentane 0.01
    1-propoxy-2-propanol 8.15
    1-methoxy-2-propyl acetate 9.41
    2-(2-methoxypropoxy) propanol 16.68
    mesitylene 0.28
    ε-caprolactone 7.62
    p-cymene 0.54
    epichlorohydrin 32.5
    1,1,1-trichloroethane 0.67
    2-aminoethanol 3.28
    morpholine-4-carbaldehyde 35.67
    sulfolane 32.25
    2,2,4-trimethylpentane 0.03
    2-methyltetrahydrofuran 8.16
    n-hexyl acetate 1.96
    isooctane 0.02
    2-(2-butoxyethoxy)ethanol 19.46
    sec-butyl acetate 2.49
    tert-butyl acetate 4.13
    decalin 0.04
    glycerin 12.91
    diglyme 52.37
    acrylic acid 4.6
    isopropyl myristate 1.45
    n-butyric acid 2.67
    acetyl acetate 2.67
    di(2-ethylhexyl) phthalate 2.38
    ethyl propionate 2.81
    nitromethane 18.4
    1,2-diethoxyethane 15.54
    benzonitrile 2.68
    trioctyl phosphate 1.1
    1-bromopropane 0.5
    gamma-valerolactone 32.27
    n-decanol 0.53
    triethyl phosphate 3.62
    4-methyl-2-pentanol 0.85
    propionitrile 1.93
    vinylene carbonate 4.88
    1,1,2-trichlorotrifluoroethane 21.29
    DMS 6.31
    cumene 0.36
    2-octanol 0.37
    2-hexanone 3.45
    octyl acetate 1.44
    limonene 0.66
    1,2-dimethoxyethane 28.45
    ethyl orthosilicate 3.23
    tributyl phosphate 1.83
    diacetone alcohol 8.8
    N,N-dimethylaniline 2.68
    acrylonitrile 4.1
    aniline 2.62
    1,3-propanediol 5.6
    bromobenzene 0.62
    dibromomethane 0.55
    1,1,2,2-tetrachloroethane 4.65
    2-methyl-cyclohexyl acetate 3.95
    tetrabutyl urea 2.77
    diisobutyl methanol 1.11
    2-phenylethanol 2.93
    styrene 0.51
    dioctyl adipate 4.01
    dimethyl sulfate 11.16
    ethyl butyrate 3.23
    methyl lactate 6.35
    butyl lactate 2.92
    diethyl carbonate 2.96
    propanediol butyl ether 5.4
    triethyl orthoformate 4.74
    p-tert-butyltoluene 0.53
    methyl 4-tert-butylbenzoate 5.98
    morpholine 22.69
    tert-butylamine 0.63
    n-dodecanol 0.46
    dimethoxymethane 13.57
    ethylene carbonate 3.3
    cyrene 13.05
    2-ethoxyethyl acetate 7.14
    2-ethylhexyl acetate 2.41
    1,2,4-trichlorobenzene 2.33
    4-methylpyridine 4.59
    dibutyl ether 1.87
    2,6-dimethyl-4-heptanol 1.11
    DEF 5.58
    dimethyl isosorbide 28.46
    tetrachloroethylene 1.7
    eugenol 7.11
    triacetin 8.79
    span 80 7.15
    1,4-butanediol 2.12
    1,1-dichloroethane 0.65
    2-methyl-1-pentanol 1.79
    methyl formate 4.14
    2-methyl-1-butanol 1.46
    n-decane 0.04
    butyronitrile 1.24
    3,7-dimethyl-1-octanol 0.95
    1-chlorooctane 0.23
    1-chlorotetradecane 0.16
    n-nonane 0.02
    undecane 0.03
    tert-butylcyclohexane 0.04
    cyclooctane 0.01
    cyclopentanol 2.33
    tetrahydropyran 4.71
    tert-amyl methyl ether 2.0
    2,5,8-trioxanonane 37.66
    1-hexene 0.08
    2-isopropoxyethanol 8.27
    2,2,2-trifluoroethanol 2.26
    methyl butyrate 3.6

    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