Proquinazid

Overview IFRA Request a quote

  • Identifiers

    CAS number
    189278-12-4

    Molecular formula
    C14H17IN2O2

    SMILES
    CCCN1C(=O)C2=C(C=CC(=C2)I)N=C1OCCC

    Safety labels

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Animal 34.45%
    Grape 32.49%
    Sweet 30.58%
    Fruity 25.07%
    Floral 24.96%
    Roasted 23.23%
    Odorless 22.71%
    Neroli 21.67%
    Burnt 21.34%
    Citrus 20.37%

     

    Flavor
    Bitter 76.37%
    Odorless 24.94%
    Bland 21.85%
    Cedarleaf 20.8%
    Parsley 20.58%
    Lovage 20.18%
    Sweet-like 19.72%
    Carrot 19.71%
    Green pepper 19.67%
    Broom 19.63%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    3.7

    pKa est.
    7.12 (neutral)

    Molecular weight
    372.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    481°C

    Flash point

    • 185.19 ˚C est.

  • Synonyms

    • Proquinazid
    • 189278-12-4
    • 6-iodo-2-propoxy-3-propylquinazolin-4(3H)-one
    • 6-iodo-2-propoxy-3-propyl-4(3H)-quinazolinone
    • LIH67H4H0Z
    • DTXSID1058008
    • CHEBI:83555
    • RefChem:176570
    • DTXCID4031776
    • 606-168-7
    • Proquinazid [ISO]
    • UNII-LIH67H4H0Z
    • 6-iodo-2-propoxy-3-propylquinazolin-4-one
    • 6-Iodo-2-propoxy-3-propyl-4(3H)-quinazolinone; Talius
    • 6-?Iodo-?2-?propoxy-?3-?propylquinazolin-?4(3H)?-?one
    • MFCD11616763
    • Proquinazid 10 microg/mL in Cyclohexane
    • PROQUINAZID [MI]
    • SCHEMBL21925
    • MSK21137
    • PHA27812
    • DB-108125
    • NS00000653
    • Proquinazid, PESTANAL(R), analytical standard
    • 4(3H)-Quinazolinone, 6-iodo-2-propoxy-3-propyl-
    • 6 -Iodo-2 -propoxy-3-propyl-4(3H)-quinazolinone
    • Q5156108
    • 189278-12-4

  • Applications

    Proquinazid (CAS 189278-12-4) is used as an active ingredient in agricultural fungicide formulations to control diseases caused by oomycete and other fungal pathogens, protecting a range of crops in field and greenhouse settings. It is commonly applied in plant protection programs for vegetables, fruits, and ornamental crops as part of integrated pest management strategies. Formulations may be prepared as conventional pesticide products and used by foliar spray or soil-drench methods, depending on the crop and disease target, with usage governed by local regulations and label-specific limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 69.09
    methanol 54.46
    isopropanol 45.92
    water 0.21
    ethyl acetate 119.75
    n-propanol 67.78
    acetone 202.7
    n-butanol 69.29
    acetonitrile 90.22
    DMF 447.02
    toluene 127.33
    isobutanol 57.1
    1,4-dioxane 207.84
    methyl acetate 150.08
    THF 390.65
    2-butanone 188.54
    n-pentanol 75.92
    sec-butanol 58.39
    n-hexane 3.81
    ethylene glycol 19.13
    NMP 435.73
    cyclohexane 10.56
    DMSO 225.16
    n-butyl acetate 107.31
    n-octanol 33.09
    chloroform 448.68
    n-propyl acetate 110.54
    acetic acid 174.75
    dichloromethane 512.12
    cyclohexanone 350.32
    propylene glycol 23.99
    isopropyl acetate 73.18
    DMAc 381.4
    2-ethoxyethanol 116.45
    isopentanol 68.42
    n-heptane 3.85
    ethyl formate 119.59
    1,2-dichloroethane 314.64
    n-hexanol 64.42
    2-methoxyethanol 152.3
    isobutyl acetate 77.47
    tetrachloromethane 39.35
    n-pentyl acetate 98.44
    transcutol 195.24
    n-heptanol 43.37
    ethylbenzene 48.67
    MIBK 81.51
    2-propoxyethanol 121.05
    tert-butanol 44.89
    MTBE 53.73
    2-butoxyethanol 94.69
    propionic acid 91.35
    o-xylene 57.92
    formic acid 56.53
    diethyl ether 62.94
    m-xylene 62.12
    p-xylene 77.0
    chlorobenzene 192.62
    dimethyl carbonate 80.72
    n-octane 2.72
    formamide 88.61
    cyclopentanone 401.68
    2-pentanone 138.97
    anisole 92.15
    cyclopentyl methyl ether 133.62
    gamma-butyrolactone 357.56
    1-methoxy-2-propanol 91.72
    pyridine 388.84
    3-pentanone 115.17
    furfural 413.94
    n-dodecane 3.31
    diethylene glycol 97.38
    diisopropyl ether 18.54
    tert-amyl alcohol 54.46
    acetylacetone 176.26
    n-hexadecane 3.84
    acetophenone 130.67
    methyl propionate 119.49
    isopentyl acetate 96.17
    trichloroethylene 713.21
    n-nonanol 34.12
    cyclohexanol 95.59
    benzyl alcohol 130.86
    2-ethylhexanol 48.49
    isooctanol 39.01
    dipropyl ether 38.46
    1,2-dichlorobenzene 151.98
    ethyl lactate 57.36
    propylene carbonate 202.8
    n-methylformamide 144.22
    2-pentanol 42.58
    n-pentane 4.42
    1-propoxy-2-propanol 76.26
    1-methoxy-2-propyl acetate 92.95
    2-(2-methoxypropoxy) propanol 78.58
    mesitylene 30.61
    ε-caprolactone 262.26
    p-cymene 32.3
    epichlorohydrin 481.68
    1,1,1-trichloroethane 189.36
    2-aminoethanol 40.61
    morpholine-4-carbaldehyde 338.12
    sulfolane 374.5
    2,2,4-trimethylpentane 4.25
    2-methyltetrahydrofuran 235.46
    n-hexyl acetate 89.57
    isooctane 2.46
    2-(2-butoxyethoxy)ethanol 102.45
    sec-butyl acetate 68.9
    tert-butyl acetate 68.36
    decalin 7.12
    glycerin 41.48
    diglyme 179.97
    acrylic acid 114.29
    isopropyl myristate 36.33
    n-butyric acid 124.2
    acetyl acetate 100.78
    di(2-ethylhexyl) phthalate 55.66
    ethyl propionate 87.66
    nitromethane 272.59
    1,2-diethoxyethane 90.73
    benzonitrile 181.3
    trioctyl phosphate 38.86
    1-bromopropane 123.31
    gamma-valerolactone 515.47
    n-decanol 27.98
    triethyl phosphate 47.02
    4-methyl-2-pentanol 30.64
    propionitrile 83.53
    vinylene carbonate 232.38
    1,1,2-trichlorotrifluoroethane 250.32
    DMS 96.39
    cumene 32.65
    2-octanol 31.84
    2-hexanone 121.55
    octyl acetate 50.86
    limonene 40.99
    1,2-dimethoxyethane 186.3
    ethyl orthosilicate 43.99
    tributyl phosphate 44.6
    diacetone alcohol 84.84
    N,N-dimethylaniline 67.9
    acrylonitrile 135.6
    aniline 128.75
    1,3-propanediol 64.46
    bromobenzene 202.35
    dibromomethane 289.04
    1,1,2,2-tetrachloroethane 419.99
    2-methyl-cyclohexyl acetate 76.09
    tetrabutyl urea 66.41
    diisobutyl methanol 26.28
    2-phenylethanol 105.1
    styrene 67.29
    dioctyl adipate 60.41
    dimethyl sulfate 118.74
    ethyl butyrate 76.46
    methyl lactate 64.65
    butyl lactate 72.39
    diethyl carbonate 58.65
    propanediol butyl ether 75.52
    triethyl orthoformate 54.05
    p-tert-butyltoluene 28.19
    methyl 4-tert-butylbenzoate 83.04
    morpholine 246.83
    tert-butylamine 28.3
    n-dodecanol 23.1
    dimethoxymethane 168.87
    ethylene carbonate 169.88
    cyrene 129.04
    2-ethoxyethyl acetate 131.02
    2-ethylhexyl acetate 85.34
    1,2,4-trichlorobenzene 186.69
    4-methylpyridine 321.81
    dibutyl ether 37.66
    2,6-dimethyl-4-heptanol 26.28
    DEF 176.92
    dimethyl isosorbide 146.74
    tetrachloroethylene 248.96
    eugenol 101.26
    triacetin 83.68
    span 80 75.19
    1,4-butanediol 44.4
    1,1-dichloroethane 210.56
    2-methyl-1-pentanol 82.57
    methyl formate 139.07
    2-methyl-1-butanol 69.71
    n-decane 4.4
    butyronitrile 97.89
    3,7-dimethyl-1-octanol 35.31
    1-chlorooctane 25.88
    1-chlorotetradecane 13.2
    n-nonane 3.45
    undecane 3.73
    tert-butylcyclohexane 5.52
    cyclooctane 3.07
    cyclopentanol 111.54
    tetrahydropyran 193.15
    tert-amyl methyl ether 51.48
    2,5,8-trioxanonane 128.6
    1-hexene 25.91
    2-isopropoxyethanol 85.2
    2,2,2-trifluoroethanol 72.29
    methyl butyrate 131.91

    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