4-Methylumbelliferyl acetate

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  • Identifiers

    CAS number
    2747-05-9

    Molecular formula
    C12H10O4

    SMILES
    CC1=CC(=O)OC2=C1C=CC(=C2)OC(=O)C

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Phenolic 45.5%
    Animal 36.29%
    Odorless 35.92%
    Floral 32.83%
    Burnt 31.2%
    Nutty 30.85%
    Powdery 29.25%
    Fruity 28.98%
    Aromatic 26.51%
    Balsamic 26.24%

     

    Flavor
    Sweet 54.75%
    Bitter 34.34%
    Woody 32.8%
    Powdery 29.95%
    Tobacco 27.43%
    Balsam 27.18%
    Mild 26.04%
    Floral 25.82%
    Phenolic 24.93%
    Creamy 24.83%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    2.0

    pKa est.
    7.0 (neutral)

    Molecular weight
    218.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    365°C

    Melting point expt.

    • 153 - 154 °C

    Flash point

    • 171.56 ˚C est.

  • Synonyms

    • 7-Acetoxy-4-methylcoumarin
    • 4-methylumbelliferyl acetate
    • 2747-05-9
    • 4-Methyl-2-oxo-2H-chromen-7-yl acetate
    • 2H-1-Benzopyran-2-one, 7-(acetyloxy)-4-methyl-
    • beta-Methylumbelliferyl acetate
    • DTXSID70181895
    • ZD294D576M
    • NSC-1059
    • NSC-31658
    • NSC-44763
    • CHEBI:17763
    • 7AMC
    • 4-MUA
    • RefChem:99958
    • DTXCID10104386
    • 220-386-6
    • MFCD00006865
    • (4-methyl-2-oxochromen-7-yl) acetate
    • Hymecromone Acetate
    • 7-(Acetyloxy)-4-methyl-2-benzopyrone
    • 4-methyl-7-acetyloxy coumarin
    • MLS000554751
    • Acetic acid 4-methyl-2-oxo-2H-chromen-7-yl ester
    • NSC688806
    • (4-methyl-2-oxo-chromen-7-yl) acetate
    • SMR000146868
    • 7-(acetyloxy)-4-methyl-2H-1-benzopyran-2-one
    • 7-Acetoxy-4-methyl-2H-1-benzopyran-2-one
    • ACETYL HYMETOCHROME
    • cid_366
    • 7-Acetoxy-4-methyl coumarin
    • (4-methyl-2-oxidanylidene-chromen-7-yl) ethanoate
    • CHEMBL12019
    • SCHEMBL335474
    • UNII-ZD294D576M
    • IFLab1_001442
    • IFLab2_000119
    • MEGxp0_001897
    • orb1300123
    • 4-Methyl-umbelliferone, acetate
    • SCHEMBL29651337
    • Sodium Cromoglicate Impurity 31
    • BDBM33456
    • .beta.-Methylumbelliferyl acetate
    • 7-acetoxy-4-methylchromen-2-one
    • NSC1059
    • HMS1416B12
    • HMS2290M10
    • ALBB-020396
    • NSC 1059
    • NSC31658
    • NSC44763
    • EINECS 220-386-6
    • 4-methyl-2-oxochromen-7-yl acetate
    • 4-Methylumbelliferyl acetate - 95%
    • NSC 31658
    • NSC 44763
    • STK395120
    • AKOS000323400
    • CCG-214462
    • NSC-688806
    • 7-(ACETYLOXY)-4-METHYLCOUMARIN
    • IDI1_019145
    • 4-Methyl-2-oxo-2H-chromen-7-ylacetate
    • NCGC00246518-01
    • .BETA.-METHYLUMBELLIFERONE ACETATE
    • AC-11030
    • AS-12521
    • EM166026
    • NCI60_000142
    • NCI60_002720
    • SY057310
    • 7-HYDROXY-4-METHYLCOUMARIN ACETATE
    • DB-029341
    • HY-137877
    • 4-Methyl-2-oxo-2H-chromen-7-yl acetate #
    • A1527
    • CS-0142508
    • EU-0039270
    • NS00049036
    • ST45141012
    • 4-Methyl-2-oxo-2H-1-benzopyran-7-yl acetate
    • C03837
    • 4-Methylumbelliferyl acetate, esterase substrate
    • AB00448415-08
    • COUMARIN, 7-HYDROXY-4-METHYL-, ACETATE
    • 747M059
    • F300779
    • SR-01000443138
    • acetic acid (2-keto-4-methyl-chromen-7-yl) ester
    • SR-01000443138-1
    • Q27102589
    • acetic acid (4-methyl-2-oxo-1-benzopyran-7-yl) ester
    • F0415-0023
    • 2747-05-9

  • Applications

    4-Methylumbelliferyl acetate is widely used as a fluorogenic substrate for esterase/acetylesterase activity in biochemical assays. In research and high-throughput enzyme screening, it is employed in microplate fluorescence assays to monitor acetate hydrolysis and release the highly fluorescent 4-methylumbelliferone for quantitative readouts. It serves as a versatile tool for enzyme kinetics and activity profiling, assay development in pharmaceutical and biotech contexts, and quality control of enzyme formulations. It is also used in screening campaigns to identify esterase inhibitors or activators. Use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 3.5
    methanol 3.69
    isopropanol 2.58
    water 0.04
    ethyl acetate 12.37
    n-propanol 2.93
    acetone 18.09
    n-butanol 2.97
    acetonitrile 10.29
    DMF 148.28
    toluene 1.38
    isobutanol 2.65
    1,4-dioxane 26.62
    methyl acetate 18.29
    THF 78.81
    2-butanone 13.99
    n-pentanol 2.74
    sec-butanol 2.74
    n-hexane 0.08
    ethylene glycol 3.91
    NMP 183.59
    cyclohexane 0.03
    DMSO 158.8
    n-butyl acetate 9.9
    n-octanol 2.24
    chloroform 6.55
    n-propyl acetate 10.85
    acetic acid 17.94
    dichloromethane 12.0
    cyclohexanone 20.86
    propylene glycol 4.18
    isopropyl acetate 8.94
    DMAc 138.26
    2-ethoxyethanol 20.33
    isopentanol 3.87
    n-heptane 0.1
    ethyl formate 8.69
    1,2-dichloroethane 9.3
    n-hexanol 1.88
    2-methoxyethanol 39.65
    isobutyl acetate 7.78
    tetrachloromethane 0.34
    n-pentyl acetate 6.33
    transcutol 128.55
    n-heptanol 1.9
    ethylbenzene 1.29
    MIBK 10.18
    2-propoxyethanol 26.08
    tert-butanol 5.94
    MTBE 5.81
    2-butoxyethanol 11.73
    propionic acid 9.33
    o-xylene 1.53
    formic acid 10.83
    diethyl ether 3.85
    m-xylene 1.61
    p-xylene 2.08
    chlorobenzene 4.29
    dimethyl carbonate 21.2
    n-octane 0.07
    formamide 25.41
    cyclopentanone 56.4
    2-pentanone 11.94
    anisole 13.41
    cyclopentyl methyl ether 16.67
    gamma-butyrolactone 97.61
    1-methoxy-2-propanol 30.98
    pyridine 14.9
    3-pentanone 8.89
    furfural 83.51
    n-dodecane 0.15
    diethylene glycol 30.63
    diisopropyl ether 1.55
    tert-amyl alcohol 5.3
    acetylacetone 32.16
    n-hexadecane 0.18
    acetophenone 17.14
    methyl propionate 19.39
    isopentyl acetate 11.47
    trichloroethylene 24.66
    n-nonanol 2.61
    cyclohexanol 3.34
    benzyl alcohol 8.87
    2-ethylhexanol 2.56
    isooctanol 2.26
    dipropyl ether 5.23
    1,2-dichlorobenzene 6.21
    ethyl lactate 11.86
    propylene carbonate 32.05
    n-methylformamide 28.33
    2-pentanol 2.16
    n-pentane 0.04
    1-propoxy-2-propanol 18.74
    1-methoxy-2-propyl acetate 29.0
    2-(2-methoxypropoxy) propanol 33.86
    mesitylene 1.11
    ε-caprolactone 29.12
    p-cymene 2.04
    epichlorohydrin 98.96
    1,1,1-trichloroethane 4.85
    2-aminoethanol 5.51
    morpholine-4-carbaldehyde 143.21
    sulfolane 162.83
    2,2,4-trimethylpentane 0.13
    2-methyltetrahydrofuran 28.38
    n-hexyl acetate 9.62
    isooctane 0.11
    2-(2-butoxyethoxy)ethanol 33.17
    sec-butyl acetate 8.04
    tert-butyl acetate 16.58
    decalin 0.2
    glycerin 16.92
    diglyme 67.52
    acrylic acid 13.91
    isopropyl myristate 5.75
    n-butyric acid 9.37
    acetyl acetate 11.31
    di(2-ethylhexyl) phthalate 8.57
    ethyl propionate 13.54
    nitromethane 85.67
    1,2-diethoxyethane 20.54
    benzonitrile 9.9
    trioctyl phosphate 4.84
    1-bromopropane 2.32
    gamma-valerolactone 111.02
    n-decanol 2.23
    triethyl phosphate 12.05
    4-methyl-2-pentanol 2.26
    propionitrile 5.68
    vinylene carbonate 29.01
    1,1,2-trichlorotrifluoroethane 47.92
    DMS 26.28
    cumene 1.58
    2-octanol 1.6
    2-hexanone 10.9
    octyl acetate 6.75
    limonene 2.49
    1,2-dimethoxyethane 51.8
    ethyl orthosilicate 10.02
    tributyl phosphate 7.7
    diacetone alcohol 27.63
    N,N-dimethylaniline 10.91
    acrylonitrile 12.46
    aniline 6.37
    1,3-propanediol 8.57
    bromobenzene 3.3
    dibromomethane 4.15
    1,1,2,2-tetrachloroethane 15.62
    2-methyl-cyclohexyl acetate 13.27
    tetrabutyl urea 12.41
    diisobutyl methanol 2.87
    2-phenylethanol 7.77
    styrene 1.55
    dioctyl adipate 12.83
    dimethyl sulfate 69.53
    ethyl butyrate 11.95
    methyl lactate 21.22
    butyl lactate 8.92
    diethyl carbonate 10.33
    propanediol butyl ether 13.15
    triethyl orthoformate 12.25
    p-tert-butyltoluene 2.17
    methyl 4-tert-butylbenzoate 21.96
    morpholine 36.1
    tert-butylamine 2.12
    n-dodecanol 1.85
    dimethoxymethane 52.34
    ethylene carbonate 18.53
    cyrene 39.24
    2-ethoxyethyl acetate 18.17
    2-ethylhexyl acetate 8.89
    1,2,4-trichlorobenzene 10.26
    4-methylpyridine 18.6
    dibutyl ether 5.09
    2,6-dimethyl-4-heptanol 2.87
    DEF 28.76
    dimethyl isosorbide 76.86
    tetrachloroethylene 5.45
    eugenol 22.29
    triacetin 24.35
    span 80 16.99
    1,4-butanediol 3.4
    1,1-dichloroethane 4.58
    2-methyl-1-pentanol 3.68
    methyl formate 27.46
    2-methyl-1-butanol 3.6
    n-decane 0.21
    butyronitrile 5.27
    3,7-dimethyl-1-octanol 3.51
    1-chlorooctane 1.35
    1-chlorotetradecane 0.8
    n-nonane 0.16
    undecane 0.18
    tert-butylcyclohexane 0.27
    cyclooctane 0.03
    cyclopentanol 6.57
    tetrahydropyran 8.37
    tert-amyl methyl ether 6.81
    2,5,8-trioxanonane 61.15
    1-hexene 0.59
    2-isopropoxyethanol 13.69
    2,2,2-trifluoroethanol 11.81
    methyl butyrate 16.17

    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