Butanamide, 2-[2-(4-methoxy-2-nitrophenyl)diazenyl]-N-(2-methylphenyl)-3-oxo-

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  • Identifiers

    CAS number
    6371-96-6

    Molecular formula
    C18H18N4O5

    SMILES
    CC1=CC=CC=C1NC(=O)C(C(=O)C)N=NC2=C(C=C(C=C2)OC)[N+](=O)[O-]

    Safety labels

  • Odor profile

    Fragrance
    Grape 41.46%
    Fruity 40.57%
    Odorless 32.62%
    Floral 29.85%
    Sweet 29.06%
    Citrus 28.48%
    Savory 25.96%
    Meaty 25.33%
    Cooked 25.16%
    Roasted 24.04%

     

    Flavor
    Bitter 66.74%
    Odorless 45.49%
    Bland 25.01%
    Very mild 22.96%
    Mild 22.81%
    Sweet-like 19.49%
    Nitrile 19.35%
    Bread crust 19.2%
    Taco 19.07%
    Orange flower 18.98%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    3.7

    pKa est.
    7.37 (neutral)

    Molecular weight
    370.4 g/mol

    Flash point

    • 206.36 ˚C est.

  • Synonyms

    • DTXSID20863770
    • Butanamide, 2-[(4-methoxy-2-nitrophenyl)azo]-N-(2-methylphenyl)-3-oxo-
    • Butanamide, 2-((4-methoxy-2-nitrophenyl)azo)-N-(2-methylphenyl)-3-oxo-
    • Butanamide, 2-(2-(4-methoxy-2-nitrophenyl)diazenyl)-N-(2-methylphenyl)-3-oxo-
    • Butanamide, 2-[2-(4-methoxy-2-nitrophenyl)diazenyl]-N-(2-methylphenyl)-3-oxo-
    • RefChem:570657
    • DTXCID20812349
    • 6371-96-6
    • Mono Fast Orange
    • Hansa Yellow 3RA
    • Fastona Orange 3R
    • Fenalac Yellow 3R
    • Fanchon Orange YH-5
    • Lutetia Fast Yellow 7R
    • Monolite Fast Orange 3G
    • Fanchon Orange WD-225
    • 2-[(4-methoxy-2-nitrophenyl)diazenyl]-N-(2-methylphenyl)-3-oxobutanamide
    • Ext D and C Orange No. 1
    • Fanchon Orange (Hansa Orange)
    • C.I. 11725
    • 2-[(4-Methoxy-2-nitrophenyl)azo]-3-oxo-N-(o-tolyl)butyramide
    • 2-((4-Methoxy-2-nitrophenyl)diazenyl)-3-oxo-N-(o-tolyl)butanamide
    • 2-((4-Methoxy-2-nitrophenyl)azo)-3-oxo-N-(o-tolyl)butyramide
    • EINECS 228-901-6
    • NSC 17265
    • CI 11725
    • AI3-30767
    • SCHEMBL340919
    • SCHEMBL16322841
    • SCHEMBL16322845
    • SCHEMBL29352162
    • FNFZZQUKYRHMTI-UHFFFAOYSA-N
    • NSC17265
    • NSC-17265
    • AKOS032950038
    • NS00013466
    • H11576
    • 2-((4-Methoxy-2-nitrophenyl)azo)-N-(2-methylphenyl)-3-oxobutanami- de
    • 6371-96-6

  • Applications

    Butanamide, 2-[2-(4-methoxy-2-nitrophenyl)diazenyl]-N-(2-methylphenyl)-3-oxo- (CAS 6371-96-6) is commonly used as an azo dye intermediate; real-world applications include colorants for textiles, coatings, and inks; as a building block for azo chromophores in polymers and plastics; used in research and development of azo colorants for photoresponsive materials and coating systems.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 4.17
    methanol 5.21
    isopropanol 3.07
    water 0.01
    ethyl acetate 11.79
    n-propanol 3.77
    acetone 53.74
    n-butanol 2.33
    acetonitrile 17.81
    DMF 83.94
    toluene 4.45
    isobutanol 2.5
    1,4-dioxane 29.91
    methyl acetate 24.86
    THF 150.92
    2-butanone 37.67
    n-pentanol 2.92
    sec-butanol 3.33
    n-hexane 0.1
    ethylene glycol 1.86
    NMP 117.41
    cyclohexane 0.14
    DMSO 178.22
    n-butyl acetate 5.88
    n-octanol 0.67
    chloroform 57.0
    n-propyl acetate 8.75
    acetic acid 26.34
    dichloromethane 69.56
    cyclohexanone 40.62
    propylene glycol 3.22
    isopropyl acetate 6.51
    DMAc 202.53
    2-ethoxyethanol 17.98
    isopentanol 2.47
    n-heptane 0.06
    ethyl formate 7.59
    1,2-dichloroethane 38.57
    n-hexanol 1.3
    2-methoxyethanol 28.35
    isobutyl acetate 4.82
    tetrachloromethane 1.96
    n-pentyl acetate 2.79
    transcutol 53.79
    n-heptanol 0.89
    ethylbenzene 2.64
    MIBK 6.65
    2-propoxyethanol 15.61
    tert-butanol 4.25
    MTBE 3.79
    2-butoxyethanol 7.09
    propionic acid 9.13
    o-xylene 2.89
    formic acid 10.84
    diethyl ether 4.1
    m-xylene 2.05
    p-xylene 4.72
    chlorobenzene 9.5
    dimethyl carbonate 18.68
    n-octane 0.04
    formamide 25.55
    cyclopentanone 86.63
    2-pentanone 13.5
    anisole 13.57
    cyclopentyl methyl ether 12.4
    gamma-butyrolactone 86.79
    1-methoxy-2-propanol 17.42
    pyridine 38.54
    3-pentanone 14.45
    furfural 57.64
    n-dodecane 0.05
    diethylene glycol 13.81
    diisopropyl ether 0.78
    tert-amyl alcohol 3.9
    acetylacetone 34.32
    n-hexadecane 0.06
    acetophenone 19.21
    methyl propionate 18.55
    isopentyl acetate 6.43
    trichloroethylene 107.38
    n-nonanol 0.85
    cyclohexanol 3.46
    benzyl alcohol 10.76
    2-ethylhexanol 1.22
    isooctanol 0.94
    dipropyl ether 2.76
    1,2-dichlorobenzene 10.13
    ethyl lactate 7.77
    propylene carbonate 24.37
    n-methylformamide 24.13
    2-pentanol 1.44
    n-pentane 0.06
    1-propoxy-2-propanol 9.33
    1-methoxy-2-propyl acetate 15.97
    2-(2-methoxypropoxy) propanol 17.48
    mesitylene 1.06
    ε-caprolactone 27.48
    p-cymene 1.49
    epichlorohydrin 119.71
    1,1,1-trichloroethane 20.86
    2-aminoethanol 3.71
    morpholine-4-carbaldehyde 79.36
    sulfolane 139.3
    2,2,4-trimethylpentane 0.08
    2-methyltetrahydrofuran 29.02
    n-hexyl acetate 3.43
    isooctane 0.04
    2-(2-butoxyethoxy)ethanol 15.61
    sec-butyl acetate 5.5
    tert-butyl acetate 8.2
    decalin 0.18
    glycerin 7.62
    diglyme 41.95
    acrylic acid 12.64
    isopropyl myristate 2.05
    n-butyric acid 7.08
    acetyl acetate 11.94
    di(2-ethylhexyl) phthalate 4.27
    ethyl propionate 9.41
    nitromethane 100.86
    1,2-diethoxyethane 10.49
    benzonitrile 11.41
    trioctyl phosphate 1.91
    1-bromopropane 7.27
    gamma-valerolactone 88.71
    n-decanol 0.69
    triethyl phosphate 6.91
    4-methyl-2-pentanol 1.04
    propionitrile 9.96
    vinylene carbonate 20.03
    1,1,2-trichlorotrifluoroethane 73.46
    DMS 12.8
    cumene 1.73
    2-octanol 0.55
    2-hexanone 13.09
    octyl acetate 2.55
    limonene 1.66
    1,2-dimethoxyethane 41.76
    ethyl orthosilicate 5.34
    tributyl phosphate 3.26
    diacetone alcohol 15.28
    N,N-dimethylaniline 9.62
    acrylonitrile 17.91
    aniline 9.76
    1,3-propanediol 5.39
    bromobenzene 9.87
    dibromomethane 26.86
    1,1,2,2-tetrachloroethane 66.76
    2-methyl-cyclohexyl acetate 8.21
    tetrabutyl urea 6.14
    diisobutyl methanol 1.05
    2-phenylethanol 7.21
    styrene 4.13
    dioctyl adipate 6.08
    dimethyl sulfate 48.95
    ethyl butyrate 7.18
    methyl lactate 13.96
    butyl lactate 4.33
    diethyl carbonate 6.46
    propanediol butyl ether 5.45
    triethyl orthoformate 6.64
    p-tert-butyltoluene 1.3
    methyl 4-tert-butylbenzoate 11.75
    morpholine 41.49
    tert-butylamine 1.32
    n-dodecanol 0.55
    dimethoxymethane 40.31
    ethylene carbonate 14.3
    cyrene 27.38
    2-ethoxyethyl acetate 8.38
    2-ethylhexyl acetate 4.96
    1,2,4-trichlorobenzene 19.2
    4-methylpyridine 28.23
    dibutyl ether 1.88
    2,6-dimethyl-4-heptanol 1.05
    DEF 23.42
    dimethyl isosorbide 40.01
    tetrachloroethylene 26.33
    eugenol 12.05
    triacetin 11.99
    span 80 8.19
    1,4-butanediol 2.64
    1,1-dichloroethane 22.46
    2-methyl-1-pentanol 3.24
    methyl formate 23.45
    2-methyl-1-butanol 2.55
    n-decane 0.07
    butyronitrile 5.83
    3,7-dimethyl-1-octanol 1.16
    1-chlorooctane 0.49
    1-chlorotetradecane 0.26
    n-nonane 0.05
    undecane 0.06
    tert-butylcyclohexane 0.14
    cyclooctane 0.05
    cyclopentanol 7.11
    tetrahydropyran 15.05
    tert-amyl methyl ether 3.81
    2,5,8-trioxanonane 33.35
    1-hexene 0.84
    2-isopropoxyethanol 11.06
    2,2,2-trifluoroethanol 10.42
    methyl butyrate 12.53

    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