(7R)-6,7-Dihydro-7-methyl-5H-cyclopenta(c)pyridine-4-carboxaldehyde

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  • Identifiers

    CAS number
    18070-40-1

    Molecular formula
    C10H11NO

    SMILES
    C[C@@H]1CCC2=C1C=NC=C2C=O

    Safety labels

  • Odor profile

    Fragrance
    Green 42.64%
    Nutty 35.97%
    Sweet 30.01%
    Herbal 29.66%
    Roasted 27.84%
    Earthy 26.92%
    Fatty 25.97%
    Animal 25.92%
    Musty 24.94%
    Popcorn 24.57%

     

    Flavor
    Bitter 66.94%
    Lovage 21.67%
    Woody 21.18%
    Bread crust 21.0%
    Very strong 20.93%
    Nitrile 20.92%
    Indole 20.73%
    Cereal 20.72%
    Ripe apricot 20.66%
    Cedarleaf 20.63%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.5

    pKa est.
    5.82 (weak acid)

    Molecular weight
    161.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    315°C

    Flash point

    • 136.46 ˚C est.

  • Synonyms

    • Boschniakine
    • 18070-40-1
    • (7R)-7-methyl-6,7-dihydro-5H-cyclopenta[c]pyridine-4-carbaldehyde
    • (R)-6,7-Dihydro-7-methyl-5H-2-pyrindinecarboxaldehyde
    • Boschniakine, (+)-
    • 47H84XLP3E
    • CHEBI:3157
    • DTXSID80170997
    • (7R)-7-methyl-6,7-dihydro-5H-cyclopenta(c)pyridine-4-carbaldehyde
    • (7R)-6,7-Dihydro-7-methyl-5H-cyclopenta(c)pyridine-4-carboxaldehyde
    • (7R)-6,7-Dihydro-7-methyl-5H-cyclopenta[c]pyridine-4-carboxaldehyde
    • RefChem:1050721
    • DTXCID9093488
    • 5H-2-Pyrindine-4-carboxaldehyde, 6,7-dihydro-7-methyl-, (R)-
    • (R)-6,7-dihydro-7-methyl-5H-2-pyrindine-4-carboxaldehyde
    • (+)-Boschniakine
    • Boschniakin
    • Boschniakinic aldehyde
    • C09915
    • SCHEMBL29352076
    • (7R)-7-methyl-5H,6H,7H-cyclopenta[c]pyridine-4-carbaldehyde
    • (R)-7-methyl-6,7-dihydro-5H-cyclopenta[c]pyridine-4-carbaldehyde
    • Q27105961
    • (R)-6,7-Dihydro-7-methyl-5H-2-pyrindine-4-carbaldehyde
    • 5H-Cyclopenta[c]pyridine-4-carboxaldehyde, 6,7-dihydro-7-methyl-, (7R)-
    • 5H-Cyclopenta[c]pyridine-4-carboxaldehyde, 6,7-dihydro-7-methyl-, (R)-
    • 18070-40-1

  • Applications

    (7R)-6,7-Dihydro-7-methyl-5H-cyclopenta(c)pyridine-4-carboxaldehyde (CAS 18070-40-1) is primarily used as a chiral building block and synthetic intermediate in pharmaceutical and medicinal chemistry to access cyclopenta(c)pyridine-based heterocycles. The aldehyde functionality enables further functionalization for library generation, asymmetric synthesis, and development of heterocyclic ligands or catalyst precursors in both academic and industrial R&D settings.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 131.08
    methanol 101.02
    isopropanol 107.21
    water 1.24
    ethyl acetate 391.93
    n-propanol 135.41
    acetone 356.22
    n-butanol 108.04
    acetonitrile 344.52
    DMF 468.52
    toluene 123.28
    isobutanol 103.53
    1,4-dioxane 460.09
    methyl acetate 396.07
    THF 541.57
    2-butanone 355.94
    n-pentanol 55.0
    sec-butanol 78.09
    n-hexane 1.78
    ethylene glycol 59.82
    NMP 319.21
    cyclohexane 5.2
    DMSO 423.3
    n-butyl acetate 161.43
    n-octanol 27.63
    chloroform 793.21
    n-propyl acetate 130.85
    acetic acid 178.76
    dichloromethane 1095.95
    cyclohexanone 404.78
    propylene glycol 53.37
    isopropyl acetate 167.32
    DMAc 268.07
    2-ethoxyethanol 158.27
    isopentanol 104.63
    n-heptane 3.27
    ethyl formate 245.22
    1,2-dichloroethane 742.8
    n-hexanol 102.16
    2-methoxyethanol 372.46
    isobutyl acetate 85.19
    tetrachloromethane 88.56
    n-pentyl acetate 77.48
    transcutol 572.35
    n-heptanol 40.64
    ethylbenzene 45.3
    MIBK 126.71
    2-propoxyethanol 261.25
    tert-butanol 124.02
    MTBE 88.16
    2-butoxyethanol 112.55
    propionic acid 183.2
    o-xylene 73.5
    formic acid 104.69
    diethyl ether 102.36
    m-xylene 93.1
    p-xylene 71.7
    chlorobenzene 253.91
    dimethyl carbonate 165.38
    n-octane 2.0
    formamide 229.68
    cyclopentanone 591.02
    2-pentanone 229.86
    anisole 115.78
    cyclopentyl methyl ether 181.96
    gamma-butyrolactone 791.29
    1-methoxy-2-propanol 239.15
    pyridine 454.03
    3-pentanone 178.72
    furfural 550.28
    n-dodecane 2.48
    diethylene glycol 255.98
    diisopropyl ether 30.59
    tert-amyl alcohol 80.21
    acetylacetone 306.68
    n-hexadecane 2.93
    acetophenone 129.54
    methyl propionate 323.97
    isopentyl acetate 140.19
    trichloroethylene 1247.7
    n-nonanol 27.61
    cyclohexanol 87.0
    benzyl alcohol 110.44
    2-ethylhexanol 52.2
    isooctanol 38.53
    dipropyl ether 49.14
    1,2-dichlorobenzene 231.92
    ethyl lactate 70.49
    propylene carbonate 322.59
    n-methylformamide 382.95
    2-pentanol 57.86
    n-pentane 2.02
    1-propoxy-2-propanol 147.58
    1-methoxy-2-propyl acetate 208.71
    2-(2-methoxypropoxy) propanol 115.43
    mesitylene 51.67
    ε-caprolactone 322.98
    p-cymene 35.23
    epichlorohydrin 1081.9
    1,1,1-trichloroethane 450.03
    2-aminoethanol 106.17
    morpholine-4-carbaldehyde 410.57
    sulfolane 519.19
    2,2,4-trimethylpentane 3.43
    2-methyltetrahydrofuran 319.44
    n-hexyl acetate 90.16
    isooctane 3.8
    2-(2-butoxyethoxy)ethanol 168.44
    sec-butyl acetate 79.94
    tert-butyl acetate 146.61
    decalin 5.71
    glycerin 110.81
    diglyme 312.92
    acrylic acid 183.03
    isopropyl myristate 38.31
    n-butyric acid 243.62
    acetyl acetate 175.0
    di(2-ethylhexyl) phthalate 50.46
    ethyl propionate 126.86
    nitromethane 588.36
    1,2-diethoxyethane 148.32
    benzonitrile 209.98
    trioctyl phosphate 35.91
    1-bromopropane 184.59
    gamma-valerolactone 671.63
    n-decanol 23.77
    triethyl phosphate 50.56
    4-methyl-2-pentanol 49.39
    propionitrile 259.52
    vinylene carbonate 329.23
    1,1,2-trichlorotrifluoroethane 348.97
    DMS 162.95
    cumene 33.91
    2-octanol 25.92
    2-hexanone 105.89
    octyl acetate 49.89
    limonene 41.32
    1,2-dimethoxyethane 231.26
    ethyl orthosilicate 45.63
    tributyl phosphate 45.76
    diacetone alcohol 173.33
    N,N-dimethylaniline 64.45
    acrylonitrile 432.21
    aniline 158.52
    1,3-propanediol 169.02
    bromobenzene 267.56
    dibromomethane 511.36
    1,1,2,2-tetrachloroethane 698.06
    2-methyl-cyclohexyl acetate 78.3
    tetrabutyl urea 55.57
    diisobutyl methanol 35.81
    2-phenylethanol 134.49
    styrene 56.58
    dioctyl adipate 57.02
    dimethyl sulfate 212.11
    ethyl butyrate 95.19
    methyl lactate 126.2
    butyl lactate 71.87
    diethyl carbonate 74.9
    propanediol butyl ether 90.07
    triethyl orthoformate 62.21
    p-tert-butyltoluene 32.73
    methyl 4-tert-butylbenzoate 101.58
    morpholine 448.57
    tert-butylamine 55.47
    n-dodecanol 19.37
    dimethoxymethane 311.61
    ethylene carbonate 259.33
    cyrene 118.1
    2-ethoxyethyl acetate 165.05
    2-ethylhexyl acetate 106.24
    1,2,4-trichlorobenzene 258.93
    4-methylpyridine 362.26
    dibutyl ether 32.71
    2,6-dimethyl-4-heptanol 35.81
    DEF 229.22
    dimethyl isosorbide 207.46
    tetrachloroethylene 414.41
    eugenol 109.53
    triacetin 107.54
    span 80 83.88
    1,4-butanediol 55.64
    1,1-dichloroethane 547.08
    2-methyl-1-pentanol 56.47
    methyl formate 335.48
    2-methyl-1-butanol 81.87
    n-decane 3.09
    butyronitrile 180.56
    3,7-dimethyl-1-octanol 39.99
    1-chlorooctane 21.22
    1-chlorotetradecane 11.3
    n-nonane 2.5
    undecane 2.76
    tert-butylcyclohexane 5.75
    cyclooctane 2.41
    cyclopentanol 135.05
    tetrahydropyran 250.35
    tert-amyl methyl ether 56.61
    2,5,8-trioxanonane 194.26
    1-hexene 13.76
    2-isopropoxyethanol 104.73
    2,2,2-trifluoroethanol 130.39
    methyl butyrate 155.04

    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