Serotonin

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  • Identifiers

    CAS number
    50-67-9

    Molecular formula
    C10H12N2O

    SMILES
    C1=CC2=C(C=C1O)C(=CN2)CCN

    Safety labels

    Acute Toxic
    Acute Toxic

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Odorless 53.15%
    Meaty 41.19%
    Fishy 36.91%
    Cheesy 35.34%
    Animal 33.49%
    Savory 30.15%
    Burnt 29.93%
    Ripe 29.14%
    Cooked 26.24%
    Smoky 22.44%

     

    Flavor
    Bitter 63.72%
    Mild 33.18%
    Odorless 31.41%
    Very strong 22.08%
    Indole 21.6%
    Nitrile 21.21%
    Sweet-like 20.87%
    Scallion 20.76%
    Orange flower 20.39%
    Creosote 20.22%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.2

    pKa est.
    7.45 (neutral)

    Molecular weight
    176.21 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    444°C

    Flash point

    • 216.36 ˚C est.

    Solubility expt.

    • 25.5 mg/mL

  • Synonyms

    • serotonin
    • 5-HYDROXYTRYPTAMINE
    • 50-67-9
    • 3-(2-Aminoethyl)-1H-indol-5-ol
    • Enteramine
    • Thrombotonin
    • Thrombocytin
    • Serotonine
    • 1H-Indol-5-ol, 3-(2-aminoethyl)-
    • Hippophaine
    • 3-(beta-Aminoethyl)-5-hydroxyindole
    • 333DO1RDJY
    • DTXSID8075330
    • CHEBI:28790
    • 3-(2-Aminoethyl)-1H-indol-5-o
    • Serotonin (Human)
    • 5 Hydroxytryptamine
    • Serotonin 1543
    • RefChem:6493
    • DTXCID4040765
    • 200-058-9
    • NSC58241
    • 5-HT
    • Antemovis
    • Ds substance
    • Hippophain
    • 5-Hta
    • Antemoqua
    • Substance DS
    • Substanz DS
    • Tryptamine, 5-hydroxy-
    • 3-(2-Aminoethyl)indol-5-ol
    • Indol-5-ol, 3-(2-aminoethyl)-
    • Enteramin
    • 5-Hydroxy-3-(beta-aminoethyl)indole
    • 3-(2-Amino-ethyl)-1H-indol-5-ol
    • MFCD00055054
    • 3-(.beta.-Aminoethyl)-5-hydroxyindole
    • 5-Hydroxytryptamine, free base
    • Lisinopril Impurity 21
    • EINECS 200-058-9
    • UNII-333DO1RDJY
    • BRN 0143524
    • Serotonin base
    • 5-hydroxytryptamin
    • 5-Hydroxytriptamine
    • 5-Hydroxyltryptamine
    • 5-hydroxy-tryptamine
    • 1H-Indol-5-ol,3-(2-aminoethyl)-
    • Enteramin; Enteramine
    • 5-hydroxyl tryptamine
    • GTPL5
    • SEROTONIN [MI]
    • CHEMBL39
    • Prestwick0_000481
    • Prestwick1_000481
    • Prestwick2_000481
    • Prestwick3_000481
    • Lopac-H-9523
    • 5-Hydroxytryptamine;5-HT
    • Biomol-NT_000083
    • bmse000757
    • SEROTONIN [MART.]
    • SCHEMBL1495
    • SEROTONIN [WHO-DD]
    • Lopac0_000607
    • Oprea1_712368
    • BSPBio_000341
    • BSPBio_001112
    • KBioGR_000452
    • KBioGR_002472
    • KBioSS_000452
    • KBioSS_002479
    • 5-22-12-00016 (Beilstein Handbook Reference)
    • Serotonin, analytical standard
    • SPBio_002262
    • BPBio1_000377
    • BPBio1_001079
    • orb1297148
    • SCHEMBL11339569
    • SCHEMBL29349412
    • BCBcMAP01_000198
    • BDBM10755
    • KBio2_000452
    • KBio2_002472
    • KBio2_003020
    • KBio2_005040
    • KBio2_005588
    • KBio2_007608
    • KBio3_000843
    • KBio3_000844
    • KBio3_002950
    • cMAP_000059
    • 3-(b-Aminoethyl)-5-hydroxyindole
    • 5-Hydroxy-3-(b-aminoethyl)indole
    • Bio1_000450
    • Bio1_000939
    • Bio1_001428
    • Bio2_000396
    • Bio2_000876
    • HMS1362H13
    • HMS1792H13
    • HMS1990H13
    • HMS3403H13
    • EBC-84080
    • PDSP1_001512
    • PDSP2_001496
    • STK503758
    • AKOS001484724
    • 3-(2-Aminoethyl)-1H-indol-5-ol #
    • CCG-204696
    • DB08839
    • FH52409
    • indole, 3-(2-aminoethyl)-5-hydroxy-
    • MSK157682-100M
    • SDCCGSBI-0050589.P002
    • 5-Hydroxy-3-(.beta.-aminoethyl)indole
    • IDI1_002151
    • SMP1_000272
    • 5-hydroxy tryptamine creatinine disulfate
    • MSK157682-1000M
    • NCGC00015525-01
    • NCGC00015525-02
    • NCGC00015525-03
    • NCGC00015525-04
    • NCGC00015525-05
    • NCGC00015525-06
    • 50-67-9

  • Applications

    Serotonin (CAS 50-67-9) is primarily used in scientific research and pharmaceutical development as a reference standard and analytical substrate; in industry it serves as an analytical calibrant for HPLC/LC-MS and as a ligand in assays related to serotonin receptors and monoaminergic enzymes such as MAO; it is also used as teaching and research material to model neurotransmission and in the development of quantitative assays, providing a reference point for analytical method validation.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1.3
    methanol 5.66
    isopropanol 0.57
    water 2.06
    ethyl acetate 0.64
    n-propanol 0.83
    acetone 0.77
    n-butanol 0.77
    acetonitrile 0.39
    DMF 4.24
    toluene 0.07
    isobutanol 0.85
    1,4-dioxane 0.46
    methyl acetate 0.87
    THF 5.35
    2-butanone 1.01
    n-pentanol 1.19
    sec-butanol 0.76
    n-hexane 0.02
    ethylene glycol 11.54
    NMP 23.44
    cyclohexane 0.01
    DMSO 8.98
    n-butyl acetate 2.27
    n-octanol 0.47
    chloroform 0.26
    n-propyl acetate 1.46
    acetic acid 12.92
    dichloromethane 0.22
    cyclohexanone 2.16
    propylene glycol 7.27
    isopropyl acetate 0.61
    DMAc 17.76
    2-ethoxyethanol 15.6
    isopentanol 1.36
    n-heptane 0.04
    ethyl formate 1.78
    1,2-dichloroethane 0.21
    n-hexanol 2.41
    2-methoxyethanol 18.19
    isobutyl acetate 1.5
    tetrachloromethane 0.37
    n-pentyl acetate 1.29
    transcutol 13.33
    n-heptanol 1.57
    ethylbenzene 0.13
    MIBK 1.04
    2-propoxyethanol 18.32
    tert-butanol 1.68
    MTBE 0.39
    2-butoxyethanol 9.67
    propionic acid 4.45
    o-xylene 0.15
    formic acid 44.79
    diethyl ether 0.1
    m-xylene 0.16
    p-xylene 0.29
    chlorobenzene 0.2
    dimethyl carbonate 1.88
    n-octane 0.02
    formamide 32.15
    cyclopentanone 6.81
    2-pentanone 0.63
    anisole 0.85
    cyclopentyl methyl ether 0.94
    gamma-butyrolactone 13.15
    1-methoxy-2-propanol 7.92
    pyridine 0.84
    3-pentanone 0.51
    furfural 19.2
    n-dodecane 0.02
    diethylene glycol 37.34
    diisopropyl ether 0.12
    tert-amyl alcohol 2.19
    acetylacetone 2.18
    n-hexadecane 0.02
    acetophenone 2.39
    methyl propionate 1.07
    isopentyl acetate 3.58
    trichloroethylene 0.7
    n-nonanol 0.56
    cyclohexanol 0.66
    benzyl alcohol 2.49
    2-ethylhexanol 1.82
    isooctanol 1.63
    dipropyl ether 0.48
    1,2-dichlorobenzene 0.46
    ethyl lactate 5.24
    propylene carbonate 7.84
    n-methylformamide 5.45
    2-pentanol 0.42
    n-pentane 0.01
    1-propoxy-2-propanol 7.69
    1-methoxy-2-propyl acetate 4.9
    2-(2-methoxypropoxy) propanol 10.44
    mesitylene 0.17
    ε-caprolactone 4.13
    p-cymene 0.43
    epichlorohydrin 5.34
    1,1,1-trichloroethane 0.34
    2-aminoethanol 10.94
    morpholine-4-carbaldehyde 12.62
    sulfolane 29.31
    2,2,4-trimethylpentane 0.03
    2-methyltetrahydrofuran 2.06
    n-hexyl acetate 1.13
    isooctane 0.02
    2-(2-butoxyethoxy)ethanol 10.16
    sec-butyl acetate 1.05
    tert-butyl acetate 1.5
    decalin 0.04
    glycerin 39.88
    diglyme 15.2
    acrylic acid 7.42
    isopropyl myristate 0.55
    n-butyric acid 4.66
    acetyl acetate 0.98
    di(2-ethylhexyl) phthalate 2.81
    ethyl propionate 1.16
    nitromethane 10.15
    1,2-diethoxyethane 1.04
    benzonitrile 1.27
    trioctyl phosphate 1.73
    1-bromopropane 0.07
    gamma-valerolactone 12.53
    n-decanol 0.46
    triethyl phosphate 3.11
    4-methyl-2-pentanol 0.74
    propionitrile 0.41
    vinylene carbonate 4.74
    1,1,2-trichlorotrifluoroethane 22.31
    DMS 2.45
    cumene 0.26
    2-octanol 0.62
    2-hexanone 1.47
    octyl acetate 0.89
    limonene 0.45
    1,2-dimethoxyethane 7.26
    ethyl orthosilicate 2.63
    tributyl phosphate 1.8
    diacetone alcohol 6.68
    N,N-dimethylaniline 0.99
    acrylonitrile 1.06
    aniline 0.52
    1,3-propanediol 10.33
    bromobenzene 0.13
    dibromomethane 0.11
    1,1,2,2-tetrachloroethane 0.75
    2-methyl-cyclohexyl acetate 3.41
    tetrabutyl urea 2.61
    diisobutyl methanol 0.87
    2-phenylethanol 3.76
    styrene 0.11
    dioctyl adipate 1.47
    dimethyl sulfate 7.2
    ethyl butyrate 1.98
    methyl lactate 7.11
    butyl lactate 4.41
    diethyl carbonate 1.94
    propanediol butyl ether 7.06
    triethyl orthoformate 2.31
    p-tert-butyltoluene 0.39
    methyl 4-tert-butylbenzoate 5.14
    morpholine 1.03
    tert-butylamine 0.44
    n-dodecanol 0.36
    dimethoxymethane 1.86
    ethylene carbonate 3.02
    cyrene 18.31
    2-ethoxyethyl acetate 3.02
    2-ethylhexyl acetate 2.55
    1,2,4-trichlorobenzene 0.81
    4-methylpyridine 0.61
    dibutyl ether 0.22
    2,6-dimethyl-4-heptanol 0.87
    DEF 1.22
    dimethyl isosorbide 18.23
    tetrachloroethylene 1.11
    eugenol 9.0
    triacetin 3.43
    span 80 5.89
    1,4-butanediol 7.2
    1,1-dichloroethane 0.11
    2-methyl-1-pentanol 2.18
    methyl formate 4.44
    2-methyl-1-butanol 1.31
    n-decane 0.03
    butyronitrile 0.45
    3,7-dimethyl-1-octanol 0.74
    1-chlorooctane 0.1
    1-chlorotetradecane 0.07
    n-nonane 0.02
    undecane 0.02
    tert-butylcyclohexane 0.05
    cyclooctane 0.01
    cyclopentanol 2.0
    tetrahydropyran 0.25
    tert-amyl methyl ether 0.58
    2,5,8-trioxanonane 14.07
    1-hexene 0.07
    2-isopropoxyethanol 8.07
    2,2,2-trifluoroethanol 12.1
    methyl butyrate 2.03

    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