Pallidol

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  • Identifiers

    CAS number
    105037-88-5

    Molecular formula
    C28H22O6

    SMILES
    C1=CC(=CC=C1[C@H]2[C@H]3[C@H]([C@@H](C4=C3C=C(C=C4O)O)C5=CC=C(C=C5)O)C6=C2C(=CC(=C6)O)O)O

    Safety labels

  • Odor profile

    Fragrance
    Phenolic 63.16%
    Odorless 46.26%
    Medicinal 32.72%
    Burnt 28.72%
    Spicy 27.3%
    Smoky 26.78%
    Animal 24.47%
    Balsamic 20.31%
    Musty 19.51%
    Bitter 19.03%

     

    Flavor
    Bitter 94.82%
    Odorless 19.9%
    Very strong 19.82%
    Sweet-like 19.63%
    Indole 19.41%
    Cedarleaf 19.32%
    Nitrile 18.82%
    Rotten 18.15%
    Moth ball 17.99%
    Lovage 17.93%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    4.6

    pKa est.
    10.54 (weak base)

    Molecular weight
    454.5 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    1246°C

    Flash point

    • 337.63 ˚C est.

  • Synonyms

    • Pallidol
    • 105037-88-5
    • QE5TL72TJ8
    • (4bR,5R,9bR,10R)-5,10-bis(4-hydroxyphenyl)-4b,5,9b,10-tetrahydroindeno[2,1-a]indene-1,3,6,8-tetrol
    • CHEBI:76173
    • DTXSID20727005
    • (4bR,5R,9bR,10R)-5,10-bis(4-hydroxyphenyl)-4b,5,9b,10-tetrahydroindeno(2,1-a)indene-1,3,6,8-tetrol
    • RefChem:169647
    • DTXCID101514889
    • Pallidol A
    • 1622292-61-8
    • Indeno[2,1-a]indene-1,3,6,8-tetrol, 4b,5,9b,10-tetrahydro-5,10-bis(4-hydroxyphenyl)-, (4bR,5R,9bR,10R)-
    • UNII-QE5TL72TJ8
    • CHEMBL480462
    • (4bR,5R,9bR,10R)-4b,5,9b,10-Tetrahydro-5,10-bis(4-hydroxyphenyl)indeno(2,1-a)indene-1,3,6,8-tetrol
    • Indeno(2,1-a)indene-1,3,6,8-tetrol, 4b,5,9b,10-tetrahydro-5,10-bis(4-hydroxyphenyl)-, (4bR,5R,9bR,10R)-
    • (4bR,5R,9bR,10R)-4b,5,9b,10-Tetrahydro-5,10-bis(4-hydroxyphenyl)indeno[2,1-a]indene-1,3,6,8-tetrol
    • orb1680171
    • SCHEMBL13169545
    • SCHEMBL29502816
    • BDBM50259652
    • AKOS040763576
    • FS-7682
    • (4bR,5R,9bR,10R)-5,10-Bis-(4-hydroxy-phenyl)-4b,5,9b,10-tetrahydro-indeno[2,1-a]indene-1,3,6,8-tetraol
    • DA-56561
    • HY-117245
    • CS-0064526
    • E83700
    • Q6634710
    • 105037-88-5

  • Applications

    Pallidol (CAS 105037-88-5) is commonly used as an intermediate in organic synthesis and as a building block for polymer systems, where it can serve as a diol component in the production of polyesters and polyurethanes. In coatings, inks, and adhesives, Pallidol may act as a resin modifier or crosslinking co-monomer to tune film-forming properties and cure behavior. It is sometimes evaluated for fragrance-related applications as an odorant or fixative ingredient. Additionally, Pallidol can be used in research and development as a processing aid or reagent in synthesis workflows, subject to applicable regulations and formulation constraints.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 4.1
    methanol 6.58
    isopropanol 1.82
    water 0.1
    ethyl acetate 2.2
    n-propanol 2.63
    acetone 8.89
    n-butanol 1.53
    acetonitrile 1.98
    DMF 55.47
    toluene 0.24
    isobutanol 0.92
    1,4-dioxane 7.06
    methyl acetate 2.66
    THF 31.91
    2-butanone 5.84
    n-pentanol 1.12
    sec-butanol 0.97
    n-hexane 0.01
    ethylene glycol 8.29
    NMP 13.47
    cyclohexane 0.01
    DMSO 110.3
    n-butyl acetate 2.36
    n-octanol 1.58
    chloroform 0.45
    n-propyl acetate 1.8
    acetic acid 18.31
    dichloromethane 0.22
    cyclohexanone 5.86
    propylene glycol 9.07
    isopropyl acetate 2.32
    DMAc 43.19
    2-ethoxyethanol 16.8
    isopentanol 0.99
    n-heptane 0.02
    ethyl formate 3.36
    1,2-dichloroethane 0.35
    n-hexanol 0.88
    2-methoxyethanol 47.05
    isobutyl acetate 1.13
    tetrachloromethane 0.09
    n-pentyl acetate 3.44
    transcutol 28.16
    n-heptanol 1.73
    ethylbenzene 0.15
    MIBK 2.56
    2-propoxyethanol 21.05
    tert-butanol 1.49
    MTBE 0.57
    2-butoxyethanol 13.25
    propionic acid 4.31
    o-xylene 0.16
    formic acid 17.37
    diethyl ether 0.69
    m-xylene 0.21
    p-xylene 0.17
    chlorobenzene 0.27
    dimethyl carbonate 6.0
    n-octane 0.02
    formamide 25.92
    cyclopentanone 17.58
    2-pentanone 4.16
    anisole 1.31
    cyclopentyl methyl ether 1.7
    gamma-butyrolactone 16.85
    1-methoxy-2-propanol 28.55
    pyridine 5.23
    3-pentanone 1.86
    furfural 14.4
    n-dodecane 0.03
    diethylene glycol 26.28
    diisopropyl ether 0.16
    tert-amyl alcohol 0.85
    acetylacetone 12.34
    n-hexadecane 0.03
    acetophenone 2.39
    methyl propionate 3.56
    isopentyl acetate 2.35
    trichloroethylene 1.31
    n-nonanol 1.85
    cyclohexanol 0.6
    benzyl alcohol 2.46
    2-ethylhexanol 0.58
    isooctanol 1.28
    dipropyl ether 1.31
    1,2-dichlorobenzene 0.26
    ethyl lactate 4.25
    propylene carbonate 5.24
    n-methylformamide 20.55
    2-pentanol 0.57
    n-pentane 0.01
    1-propoxy-2-propanol 13.8
    1-methoxy-2-propyl acetate 9.31
    2-(2-methoxypropoxy) propanol 11.48
    mesitylene 0.12
    ε-caprolactone 5.69
    p-cymene 0.24
    epichlorohydrin 13.63
    1,1,1-trichloroethane 0.27
    2-aminoethanol 9.83
    morpholine-4-carbaldehyde 28.24
    sulfolane 30.63
    2,2,4-trimethylpentane 0.01
    2-methyltetrahydrofuran 2.7
    n-hexyl acetate 3.3
    isooctane 0.01
    2-(2-butoxyethoxy)ethanol 16.1
    sec-butyl acetate 1.08
    tert-butyl acetate 3.15
    decalin 0.01
    glycerin 30.64
    diglyme 23.79
    acrylic acid 7.45
    isopropyl myristate 1.7
    n-butyric acid 5.2
    acetyl acetate 2.64
    di(2-ethylhexyl) phthalate 2.52
    ethyl propionate 1.68
    nitromethane 34.52
    1,2-diethoxyethane 5.15
    benzonitrile 1.61
    trioctyl phosphate 2.12
    1-bromopropane 0.11
    gamma-valerolactone 46.45
    n-decanol 1.29
    triethyl phosphate 1.53
    4-methyl-2-pentanol 0.46
    propionitrile 1.65
    vinylene carbonate 5.19
    1,1,2-trichlorotrifluoroethane 26.11
    DMS 3.18
    cumene 0.11
    2-octanol 0.97
    2-hexanone 2.36
    octyl acetate 2.42
    limonene 0.22
    1,2-dimethoxyethane 17.91
    ethyl orthosilicate 1.39
    tributyl phosphate 2.1
    diacetone alcohol 9.52
    N,N-dimethylaniline 0.9
    acrylonitrile 4.42
    aniline 1.15
    1,3-propanediol 13.69
    bromobenzene 0.15
    dibromomethane 0.11
    1,1,2,2-tetrachloroethane 1.37
    2-methyl-cyclohexyl acetate 1.87
    tetrabutyl urea 3.78
    diisobutyl methanol 0.56
    2-phenylethanol 2.63
    styrene 0.16
    dioctyl adipate 3.18
    dimethyl sulfate 11.2
    ethyl butyrate 2.01
    methyl lactate 11.74
    butyl lactate 6.9
    diethyl carbonate 1.38
    propanediol butyl ether 13.2
    triethyl orthoformate 2.41
    p-tert-butyltoluene 0.24
    methyl 4-tert-butylbenzoate 5.51
    morpholine 11.77
    tert-butylamine 0.26
    n-dodecanol 0.87
    dimethoxymethane 25.09
    ethylene carbonate 3.8
    cyrene 11.9
    2-ethoxyethyl acetate 7.49
    2-ethylhexyl acetate 1.42
    1,2,4-trichlorobenzene 0.52
    4-methylpyridine 2.46
    dibutyl ether 1.18
    2,6-dimethyl-4-heptanol 0.56
    DEF 5.4
    dimethyl isosorbide 17.04
    tetrachloroethylene 0.81
    eugenol 7.65
    triacetin 6.44
    span 80 8.8
    1,4-butanediol 3.76
    1,1-dichloroethane 0.24
    2-methyl-1-pentanol 0.7
    methyl formate 14.38
    2-methyl-1-butanol 0.76
    n-decane 0.04
    butyronitrile 1.5
    3,7-dimethyl-1-octanol 1.07
    1-chlorooctane 0.25
    1-chlorotetradecane 0.12
    n-nonane 0.03
    undecane 0.03
    tert-butylcyclohexane 0.01
    cyclooctane 0.01
    cyclopentanol 1.46
    tetrahydropyran 2.05
    tert-amyl methyl ether 0.53
    2,5,8-trioxanonane 18.84
    1-hexene 0.05
    2-isopropoxyethanol 6.76
    2,2,2-trifluoroethanol 6.36
    methyl butyrate 2.33

    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