3-(4-Hydroxyphenyl)propionic acid

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  • Identifiers

    CAS number
    501-97-3

    Molecular formula
    C9H10O3

    SMILES
    C1=CC(=CC=C1CCC(=O)O)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Phenolic 55.55%
    Animal 40.92%
    Balsamic 40.37%
    Honey 36.22%
    Sweet 34.16%
    Odorless 33.21%
    Sour 30.17%
    Vanilla 27.43%
    Aromatic 26.53%
    Floral 26.16%

     

    Flavor
    Sweet 56.0%
    Mild 45.01%
    Phenolic 42.2%
    Odorless 41.7%
    Sour 39.89%
    Faint 35.32%
    Balsam 34.33%
    Balsamic 32.35%
    Honey 29.28%
    Nutty 28.14%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    1.2

    pKa est.
    8.63 (weak base)

    Molecular weight
    166.17 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    343°C

    Melting point expt.

    • 129 °C

    Flash point

    • 174.02 ˚C est.

  • Synonyms

    • 3-(4-Hydroxyphenyl)propionic acid
    • 501-97-3
    • Phloretic acid
    • 3-(4-Hydroxyphenyl)propanoic acid
    • Hydro-p-coumaric acid
    • Dihydro-p-coumaric acid
    • Benzenepropanoic acid, 4-hydroxy-
    • 4-Hydroxyphenylpropionic acid
    • p-Hydroxyhydrocinnamic acid
    • 3-(p-Hydroxyphenyl)propionic acid
    • 4-Hydroxybenzenepropanoic acid
    • p-Hydroxyphenylpropionic acid
    • 4-HYDROXYHYDROCINNAMIC ACID
    • Hydrocinnamic acid, p-hydroxy-
    • Phloretinic acid
    • beta-(p-Hydroxyphenyl)propionic acid
    • 6QNC6P18SR
    • DTXSID2075427
    • NSC-40949
    • CHEBI:32980
    • RefChem:861868
    • DTXCID2040781
    • 207-931-3
    • desaminotyrosine
    • HYDROXYPHENYL PROPIONIC ACID
    • MFCD00002778
    • 3-(4'-Hydroxyphenyl)propionic acid
    • NSC 40949
    • Dihydrocoumaric acid
    • 4-hydroxy-benzenepropanoic acid
    • 3-(4-Hydroxyphenyl)-propionic acid
    • 4'-Hydroxyphenylpropionic acid
    • 2,3-DIHYDRO-P-COUMARIC ACID
    • .beta.-(p-Hydroxyphenyl)propionic acid
    • 3-(p-HYDROXYPHENYL)-PROPIONIC ACID
    • M03860
    • uHLORETIC ACID
    • 3-(p-Hydroxyphenyl)propionate
    • EINECS 207-931-3
    • UNII-6QNC6P18SR
    • p-hydroxy-hydrocinnamic acid
    • BRN 2209841
    • Phloretinate
    • AI3-31909
    • hydro-p-coumarate
    • 3-(4-Hydroxyphenyl)propionicAcid
    • Dihydro-p-coumarate
    • p-Hydroxyhydrocinnamate
    • p-hydroxy-hydrocinnamate
    • p-hydroxyphenylpropionate
    • hydroxy-hydrocinnamic acid
    • 4-Hydroxybenzenepropanoate
    • N-hydroxysuccinimide ester
    • 4-hydroxy-benzenepropanoate
    • bmse010064
    • p-hydroxy-benzene propionate
    • Oprea1_221751
    • SCHEMBL35486
    • 4-(4-Hydroxyphenylpropanoate
    • 4-10-00-00631 (Beilstein Handbook Reference)
    • b-(p-Hydroxyphenyl)propionate
    • P-Hydroxybenzene propanoic acid
    • orb1304917
    • SCHEMBL1302387
    • SCHEMBL8067640
    • 3-(4-Hydroxyphenyl)-propionate
    • beta-(p-hydroxyphenyl)propionate
    • CHEMBL1172560
    • SCHEMBL28012029
    • 3-(para-Hydroxyphenyl)propionate
    • 4-(4-Hydroxyphenylpropanoic acid
    • 3-(4'-Hydroxyphenyl)-propionate
    • 3-(4-Hydroxy-phenyl)-propionate
    • 3-(p-hydroxyphenyl)propanoic acid
    • 4-(2-CARBOXYETHYL)PHENOL
    • 4-hydroxy-(9CI)benzenepropanoate
    • b-(p-Hydroxyphenyl)propionic acid
    • BDBM231636
    • BB_NC-00339
    • NSC40949
    • NSC65596
    • 3(4-hydroxy phenyl) propionic acid
    • 3-(4-hydroxy-phenyl)propanoic acid
    • 3-(4-hydroxy-phenyl)propionic acid
    • 3-(4-hydroxyphenyl)-propanoic acid
    • 3-[4-hydroxy phenyl]propionic acid
    • 3-(para-Hydroxyphenyl)propionic acid
    • BBL012597
    • EBC-47188
    • NSC-65596
    • s3795
    • SBB064098
    • STK803270
    • 3-(4 Hydroxy-phenyl)-propionic acid
    • 3-(4'-Hydroxyphenyl)-propionic acid
    • 3-(4-hydroxy phenyl) propionic acid
    • 3-(4-Hydroxy-phenyl)-propanoic acid
    • 3-(4-Hydroxy-phenyl)-propionic acid
    • 4-hydroxy-(9CI)benzenepropanoic acid
    • P-HYDROXYPHENYL-PROPIONIC ACID
    • 3-(para-Hydroxyphenyl)-propionic acid
    • AKOS000193936
    • AB00269
    • AC-5144
    • AT13193
    • CCG-266325
    • CS-W016062
    • DB03897
    • FH24472
    • HY-W015346
    • propanoic acid, 3-(4-hydroxyphenyl)-
    • PS-5760
    • P-HYDROXY-BENZENE PROPIONIC ACID
    • NCGC00382803-03
    • 3-(4-Hydroxyphenyl)propionic acid, 98%
    • DB-021662
    • H0599
    • NS00014704
    • ST50330629
    • EN300-50375
    • C01744
    • 501H973
    • AQ-358/40179730
    • Q7186527
    • F2191-0066
    • Z317038012
    • InChI=1/C9H10O3/c10-8-4-1-7(2-5-8)3-6-9(11)12/h1-2,4-5,10H,3,6H2,(H,11,12
    • 501-97-3

  • Applications

    3-(4-Hydroxyphenyl)propionic acid (CAS 501-97-3) is a useful building block in the synthesis of phenylpropanoid derivatives for pharmaceutical and bioactive materials, serving as an intermediate in the production of drug-related compounds. In the fragrance and cosmetics sectors, it is regarded as a precursor for aroma compounds and phenolic ingredients used in personal care. It is also employed as a building block for plastics, polymers, and coatings, enabling ester-based polymer and resin formation with improved material properties. Additionally, it can be used as part of industrial manufacturing workflows and may support analytical or research work as a reference or starting point for chemical synthesis.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 169.34
    methanol 230.32
    isopropanol 106.6
    water 6.39
    ethyl acetate 79.85
    n-propanol 96.86
    acetone 192.82
    n-butanol 84.08
    acetonitrile 31.45
    DMF 364.52
    toluene 4.69
    isobutanol 57.14
    1,4-dioxane 126.54
    methyl acetate 84.15
    THF 244.64
    2-butanone 87.24
    n-pentanol 59.19
    sec-butanol 61.55
    n-hexane 0.23
    ethylene glycol 109.61
    NMP 100.13
    cyclohexane 0.21
    DMSO 127.24
    n-butyl acetate 43.41
    n-octanol 27.71
    chloroform 2.03
    n-propyl acetate 43.76
    acetic acid 119.16
    dichloromethane 2.96
    cyclohexanone 54.24
    propylene glycol 128.2
    isopropyl acetate 60.2
    DMAc 259.01
    2-ethoxyethanol 251.83
    isopentanol 73.75
    n-heptane 1.05
    ethyl formate 65.61
    1,2-dichloroethane 4.67
    n-hexanol 51.13
    2-methoxyethanol 415.56
    isobutyl acetate 27.05
    tetrachloromethane 0.66
    n-pentyl acetate 27.18
    transcutol 250.82
    n-heptanol 34.7
    ethylbenzene 5.1
    MIBK 58.0
    2-propoxyethanol 199.91
    tert-butanol 174.92
    MTBE 47.59
    2-butoxyethanol 96.63
    propionic acid 70.43
    o-xylene 6.98
    formic acid 155.52
    diethyl ether 24.49
    m-xylene 8.63
    p-xylene 6.38
    chlorobenzene 3.7
    dimethyl carbonate 47.83
    n-octane 0.83
    formamide 253.78
    cyclopentanone 109.31
    2-pentanone 80.09
    anisole 34.8
    cyclopentyl methyl ether 40.39
    gamma-butyrolactone 152.71
    1-methoxy-2-propanol 278.27
    pyridine 23.1
    3-pentanone 29.42
    furfural 100.16
    n-dodecane 1.38
    diethylene glycol 230.13
    diisopropyl ether 11.07
    tert-amyl alcohol 91.57
    acetylacetone 119.0
    n-hexadecane 1.49
    acetophenone 33.2
    methyl propionate 68.07
    isopentyl acetate 41.67
    trichloroethylene 8.58
    n-nonanol 28.04
    cyclohexanol 28.13
    benzyl alcohol 43.07
    2-ethylhexanol 22.98
    isooctanol 27.52
    dipropyl ether 24.11
    1,2-dichlorobenzene 4.76
    ethyl lactate 46.02
    propylene carbonate 69.11
    n-methylformamide 192.03
    2-pentanol 46.54
    n-pentane 0.22
    1-propoxy-2-propanol 116.5
    1-methoxy-2-propyl acetate 89.72
    2-(2-methoxypropoxy) propanol 87.01
    mesitylene 7.11
    ε-caprolactone 67.31
    p-cymene 7.66
    epichlorohydrin 107.98
    1,1,1-trichloroethane 4.41
    2-aminoethanol 165.93
    morpholine-4-carbaldehyde 182.4
    sulfolane 104.09
    2,2,4-trimethylpentane 0.7
    2-methyltetrahydrofuran 77.45
    n-hexyl acetate 35.65
    isooctane 1.0
    2-(2-butoxyethoxy)ethanol 124.47
    sec-butyl acetate 30.3
    tert-butyl acetate 74.8
    decalin 0.75
    glycerin 207.5
    diglyme 184.32
    acrylic acid 57.31
    isopropyl myristate 19.97
    n-butyric acid 92.81
    acetyl acetate 45.62
    di(2-ethylhexyl) phthalate 22.38
    ethyl propionate 38.9
    nitromethane 212.42
    1,2-diethoxyethane 68.18
    benzonitrile 19.98
    trioctyl phosphate 18.47
    1-bromopropane 2.17
    gamma-valerolactone 201.21
    n-decanol 23.95
    triethyl phosphate 20.37
    4-methyl-2-pentanol 35.48
    propionitrile 22.85
    vinylene carbonate 49.3
    1,1,2-trichlorotrifluoroethane 71.03
    DMS 33.09
    cumene 6.05
    2-octanol 20.19
    2-hexanone 41.69
    octyl acetate 27.13
    limonene 8.94
    1,2-dimethoxyethane 230.74
    ethyl orthosilicate 20.03
    tributyl phosphate 19.68
    diacetone alcohol 156.3
    N,N-dimethylaniline 27.11
    acrylonitrile 35.5
    aniline 16.83
    1,3-propanediol 223.1
    bromobenzene 2.45
    dibromomethane 1.19
    1,1,2,2-tetrachloroethane 8.19
    2-methyl-cyclohexyl acetate 29.32
    tetrabutyl urea 35.36
    diisobutyl methanol 20.77
    2-phenylethanol 42.56
    styrene 5.02
    dioctyl adipate 29.42
    dimethyl sulfate 59.24
    ethyl butyrate 36.57
    methyl lactate 81.66
    butyl lactate 35.2
    diethyl carbonate 23.83
    propanediol butyl ether 84.62
    triethyl orthoformate 27.82
    p-tert-butyltoluene 8.34
    methyl 4-tert-butylbenzoate 50.91
    morpholine 172.31
    tert-butylamine 41.71
    n-dodecanol 19.07
    dimethoxymethane 202.26
    ethylene carbonate 43.42
    cyrene 86.63
    2-ethoxyethyl acetate 52.17
    2-ethylhexyl acetate 24.48
    1,2,4-trichlorobenzene 6.5
    4-methylpyridine 29.3
    dibutyl ether 20.47
    2,6-dimethyl-4-heptanol 20.77
    DEF 78.01
    dimethyl isosorbide 129.54
    tetrachloroethylene 4.65
    eugenol 60.63
    triacetin 44.78
    span 80 59.56
    1,4-butanediol 101.44
    1,1-dichloroethane 4.38
    2-methyl-1-pentanol 48.25
    methyl formate 152.58
    2-methyl-1-butanol 53.84
    n-decane 1.67
    butyronitrile 32.38
    3,7-dimethyl-1-octanol 27.49
    1-chlorooctane 6.01
    1-chlorotetradecane 3.98
    n-nonane 1.28
    undecane 1.51
    tert-butylcyclohexane 1.1
    cyclooctane 0.27
    cyclopentanol 49.13
    tetrahydropyran 37.74
    tert-amyl methyl ether 36.34
    2,5,8-trioxanonane 156.94
    1-hexene 2.03
    2-isopropoxyethanol 133.17
    2,2,2-trifluoroethanol 52.53
    methyl butyrate 53.96

    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