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Heterocyclic Building Blocks

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  • 5-Bromo-4-chloroindoxyl acetate

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    5-Bromo-4-chloro-3-indolyl acetate
    Catalog Number:
    44524
    CAS Number:
    3252-36-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00037932
    Molecular Formula:
    C10H7BrClNO2
    Molecular Weight:
    288.53
    Specification Sheet SDS

  • 1,7-Dichloro-4-methoxyisoquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44535
    CAS Number:
    630423-36-8
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD17012717
    Molecular Formula:
    C10H7Cl2NO
    Molecular Weight:
    228.07
    Specification Sheet SDS

  • 6-Bromoisatin

    Purity:
    ≥ 97% (GC)
    Synonym:
    6-Bromoindole-2,3-dione
    Catalog Number:
    44527
    CAS Number:
    6326-79-0
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD01631138
    Molecular Formula:
    C8H4BrNO2
    Molecular Weight:
    226.03
    Specification Sheet SDS

  • 3-Chloroindole-2-carboxylic acid

    Purity:
    ≥ 98% (Assay by titration)
    Catalog Number:
    44513
    CAS Number:
    28737-32-8
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD11007738
    Molecular Formula:
    C9H6ClNO2
    Molecular Weight:
    195.6
    Specification Sheet SDS

  • 7-Bromoisatin

    Purity:
    ≥ 97% (GC)
    Synonym:
    7-Bromoindole-2,3-dione
    Catalog Number:
    44531
    CAS Number:
    20780-74-9
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00774354
    Molecular Formula:
    C8H4BrNO2
    Molecular Weight:
    226.03
    Specification Sheet SDS

  • 5-Chloro-1,3,3-trimethyl-2-methyleneindoline

    Purity:
    ≥ 95% (GC)
    Synonym:
    5-Chloro-2,3-dihydro-1,3,3-trimethyl-2-methylene-1H-indole
    Catalog Number:
    44533
    CAS Number:
    6872-17-9
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD00005814
    Molecular Formula:
    C12H14ClN
    Molecular Weight:
    207.7
    Specification Sheet SDS

  • 1,3-Dichloroisoquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44534
    CAS Number:
    7742-73-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00034750
    Molecular Formula:
    C9H5Cl2N
    Molecular Weight:
    198.05
    Specification Sheet SDS

  • 4-Bromoisatin

    Purity:
    ≥ 98% (GC)
    Synonym:
    4-Bromoindole-2,3-dione
    Catalog Number:
    44526
    CAS Number:
    20780-72-7
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD03618555
    Molecular Formula:
    C8H4BrNO2
    Molecular Weight:
    226.03
    Specification Sheet SDS

  • 1-Benzyl-5-bromo-1H-indole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44517
    CAS Number:
    10075-51-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD04337704
    Molecular Formula:
    C15H12BrN
    Molecular Weight:
    286.17
    Specification Sheet SDS

  • 5-Bromoisatin

    Purity:
    ≥ 97% (HPLC)
    Synonym:
    5-Bromoindole-2,3-dione
    Catalog Number:
    44512
    CAS Number:
    87-48-9
    Purity Limit:
    ≥ 97% (HPLC)
    MDL NO:
    MFCD00005719
    Molecular Formula:
    C8H4BrNO2
    Molecular Weight:
    226.03
    Specification Sheet SDS

  • 4,7-Dichloroisatin

    Purity:
    ≥ 97% (Assay by titration)
    Synonym:
    4,7-Dichloroindole-2,3-dione
    Catalog Number:
    44509
    CAS Number:
    18711-13-2
    Purity Limit:
    ≥ 97% (Assay by titration)
    MDL NO:
    MFCD00047214
    Molecular Formula:
    C8H3Cl2NO2
    Molecular Weight:
    216.02
    Specification Sheet SDS

  • 5-Bromo-2,3-dimethylindole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44523
    CAS Number:
    4583-55-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00850844
    Molecular Formula:
    C10H10BrN
    Molecular Weight:
    224.1
    Specification Sheet SDS

  • 7-Iodoisatin

    Purity:
    ≥ 96% (Assay by titration)
    Synonym:
    7-Iodoindole-2,3-dione
    Catalog Number:
    44518
    CAS Number:
    20780-78-3
    Purity Limit:
    ≥ 96% (Assay by titration)
    MDL NO:
    MFCD01248407
    Molecular Formula:
    C8H4INO2
    Molecular Weight:
    273.03
    Specification Sheet SDS

  • 5-(Chloroacetyl)oxindole

    Purity:
    ≥ 98% (GC)
    Synonym:
    5-(Chloroacetyl)-2-indolinone
    Catalog Number:
    44521
    CAS Number:
    65435-04-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD04115734
    Molecular Formula:
    C10H8ClNO2
    Molecular Weight:
    209.63
    Specification Sheet SDS

  • 2-Chloro-1H-imidazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44493
    CAS Number:
    16265-04-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD02179530
    Molecular Formula:
    C3H3ClN2
    Molecular Weight:
    102.52
    Specification Sheet SDS

  • 3-Bromo-1-(triisopropylsilyl)indole

    Purity:
    ≥ 95% (GC)
    Catalog Number:
    44522
    CAS Number:
    148249-36-9
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD02093441
    Molecular Formula:
    C17H26BrNSi
    Molecular Weight:
    352.39
    Specification Sheet SDS

  • 4-Chloroisatin

    Purity:
    ≥ 97% (GC)
    Synonym:
    4-Chloroindole-2,3-dione
    Catalog Number:
    44515
    CAS Number:
    6344-05-4
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00129178
    Molecular Formula:
    C8H4ClNO2
    Molecular Weight:
    181.58
    Specification Sheet SDS

  • 5-Fluoro-2-methylindole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44514
    CAS Number:
    399-72-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD02093649
    Molecular Formula:
    C9H8FN
    Molecular Weight:
    149.17
    Specification Sheet SDS

  • 1-(2,6-Dichlorophenyl)oxindole

    Purity:
    ≥ 98% (GC)
    Synonym:
    1-(2,6-Dichlorophenyl)-2-oxoindoline
    Catalog Number:
    44508
    CAS Number:
    15362-40-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00451393
    Molecular Formula:
    C14H9Cl2NO
    Molecular Weight:
    278.13
    Specification Sheet SDS

  • 5-Bromoindole-3-ethanol

    Purity:
    ≥ 98% (GC)
    Synonym:
    5-Bromo-3-(2-hydroxyethyl)indole
    Catalog Number:
    44516
    CAS Number:
    32774-29-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00130167
    Molecular Formula:
    C10H10BrNO
    Molecular Weight:
    240.1
    Specification Sheet SDS

  • 4-Bromoindole-3-carboxaldehyde

    Purity:
    ≥ 96% (GC)
    Synonym:
    4-Bromo-3-formylindole
    Catalog Number:
    44511
    CAS Number:
    98600-34-1
    Purity Limit:
    ≥ 96% (GC)
    MDL NO:
    MFCD05864695
    Molecular Formula:
    C9H6BrNO
    Molecular Weight:
    224.06
    Specification Sheet SDS

  • 5-Iodoisatin

    Purity:
    ≥ 98% (Assay by titration)
    Synonym:
    5-Iodoindole-2,3-dione
    Catalog Number:
    44519
    CAS Number:
    20780-76-1
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00016899
    Molecular Formula:
    C8H4INO2
    Molecular Weight:
    273.03
    Specification Sheet SDS

  • 5-(4-Chlorobutyl)hydantoin

    Purity:
    ≥ 97% (Assay by titration)
    Catalog Number:
    44501
    CAS Number:
    40126-55-4
    Purity Limit:
    ≥ 97% (Assay by titration)
    MDL NO:
    MFCD00059722
    Molecular Formula:
    C7H11ClN2O2
    Molecular Weight:
    190.63
    Specification Sheet SDS

  • 6-Chloroisatin

    Purity:
    ≥ 98% (GC)
    Synonym:
    6-Chloroindole-2,3-dione
    Catalog Number:
    44507
    CAS Number:
    6341-92-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00086347
    Molecular Formula:
    C8H4ClNO2
    Molecular Weight:
    181.58
    Specification Sheet SDS

  • 1-(2,4-Dichlorophenyl)-2-(1-imidazolyl)ethanol

    Purity:
    ≥ 98% (GC)
    Synonym:
    1-[2-(2,4-Dichlorophenyl)-2-hydroxyethyl]imidazole
    Catalog Number:
    44500
    CAS Number:
    24155-42-8
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00044708
    Molecular Formula:
    C11H10Cl2N2O
    Molecular Weight:
    257.11
    Specification Sheet SDS

  • 5-Bromo-1-methylisatin

    Purity:
    ≥ 98% (GC)
    Synonym:
    5-Bromo-1-methylindole-2,3-dione
    Catalog Number:
    44505
    CAS Number:
    2058-72-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00456313
    Molecular Formula:
    C9H6BrNO2
    Molecular Weight:
    240.06
    Specification Sheet SDS

  • 6-Chloroimidazo[1,2-a]pyridine

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44504
    CAS Number:
    6188-25-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD05663807
    Molecular Formula:
    C7H5ClN2
    Molecular Weight:
    152.58
    Specification Sheet SDS

  • 2-(4-Chlorophenyl)-1H-indole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44510
    CAS Number:
    1211-35-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00047159
    Molecular Formula:
    C14H10ClN
    Molecular Weight:
    227.69
    Specification Sheet SDS

  • 2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene]

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44488
    CAS Number:
    899422-06-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD29050113
    Molecular Formula:
    C25H15BrO
    Molecular Weight:
    411.3
    Specification Sheet SDS

  • 1-Bromo-3-phenylimidazo[1,5-a]pyridine

    Purity:
    ≥ 97% (GC)
    Catalog Number:
    44503
    CAS Number:
    104202-15-5
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD04587511
    Molecular Formula:
    C13H9BrN2
    Molecular Weight:
    273.13
    Specification Sheet SDS

  • 2-Oxo-1-imidazolidinecarbonyl chloride

    Purity:
    ≥ 97% (Assay by titration)
    Synonym:
    1-Chlorocarbonyl-2-imidazolidinone
    Catalog Number:
    44502
    CAS Number:
    13214-53-4
    Purity Limit:
    ≥ 97% (Assay by titration)
    MDL NO:
    MFCD02683529
    Molecular Formula:
    C4H5ClN2O2
    Molecular Weight:
    148.55
    Specification Sheet SDS

  • 2-Chlorothioxanthone

    Hazmat
    Purity:
    ≥ 98% (GC)
    Hazmat
    Catalog Number:
    44492
    CAS Number:
    86-39-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00005067
    Molecular Formula:
    C13H7ClOS
    Molecular Weight:
    0
    Specification Sheet SDS

  • 5-Chlorotryptamine hydrochloride

    Purity:
    ≥ 98%
    Synonym:
    5-Chloro-3-(2-aminoethyl)indole hydrochloride
    Catalog Number:
    44506
    CAS Number:
    942-26-7
    Purity Limit:
    ≥ 98%
    MDL NO:
    MFCD00051990
    Molecular Formula:
    C10H11ClN2·HCl
    Molecular Weight:
    231.12
    Specification Sheet SDS

  • 2,4,5-Tribromoimidazole

    Hazmat
    Purity:
    ≥ 98% (HPLC)
    Hazmat
    Catalog Number:
    44499
    CAS Number:
    2034-22-2
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00005184
    Molecular Formula:
    C3HBr3N2
    Molecular Weight:
    0
    Specification Sheet SDS

  • 2,4,5-Triiodo-1H-imidazole

    Hazmat
    Purity:
    ≥ 98% (Assay by titration)
    Hazmat
    Catalog Number:
    44498
    CAS Number:
    1746-25-4
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00068812
    Molecular Formula:
    C3HI3N2
    Molecular Weight:
    0
    Specification Sheet SDS

  • 4-Iodo-1-(triphenylmethyl)imidazole

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    4-Iodo-1-tritylimidazole
    Catalog Number:
    44497
    CAS Number:
    96797-15-8
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD02179542
    Molecular Formula:
    C22H17IN2
    Molecular Weight:
    436.3
    Specification Sheet SDS

  • 4,5-Dichloroimidazole

    Purity:
    ≥ 97% (GC)
    Catalog Number:
    44494
    CAS Number:
    15965-30-7
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00005195
    Molecular Formula:
    C3H2Cl2N2
    Molecular Weight:
    136.96
    Specification Sheet SDS

  • 3-Iodo-1H-pyrazolo[3,4-d]pyrimidin-4-amine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    4-Amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidine
    Catalog Number:
    44483
    CAS Number:
    151266-23-8
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD03787931
    Molecular Formula:
    C5H4IN5
    Molecular Weight:
    261.03
    Specification Sheet SDS

  • 5-Chloro-1-methylimidazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44496
    CAS Number:
    872-49-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00014505
    Molecular Formula:
    C4H5ClN2
    Molecular Weight:
    116.55
    Specification Sheet SDS

  • Tetraiodo-2-sulfobenzoic anhydride

    Hazmat
    Purity:
    ≥ 95% (Assay by titration)
    Hazmat
    Catalog Number:
    44484
    CAS Number:
    1745-83-1
    Purity Limit:
    ≥ 95% (Assay by titration)
    MDL NO:
    MFCD00059713
    Molecular Formula:
    C7I4O4S
    Molecular Weight:
    0
    Specification Sheet SDS

  • 6-Bromoimidazo[1,2-a]pyrimidine

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44474
    CAS Number:
    865156-68-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD09261434
    Molecular Formula:
    C6H4BrN3
    Molecular Weight:
    198.02
    Specification Sheet SDS

  • 2-(2-Chlorophenyl)-4,5-diphenylimidazole

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    44495
    CAS Number:
    1707-67-1
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00030328
    Molecular Formula:
    C21H15ClN2
    Molecular Weight:
    330.82
    Specification Sheet SDS

  • 2,3-Diphenyl-5-(4-chlorophenyl)tetrazolium chloride

    Purity:
    ≥ 92% (Assay by titration)
    Catalog Number:
    44486
    CAS Number:
    10557-51-4
    Purity Limit:
    ≥ 92% (Assay by titration)
    MDL NO:
    MFCD00060031
    Molecular Formula:
    C19H14Cl2N4
    Molecular Weight:
    369.25
    Specification Sheet SDS

  • 2,5-Dibromoselenophene

    Hazmat
    Purity:
    ≥ 98% (GC)
    Hazmat
    Catalog Number:
    44480
    CAS Number:
    1755-36-8
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD20257909
    Molecular Formula:
    C4H2Br2Se
    Molecular Weight:
    0
    Specification Sheet SDS

  • 3-(4-Chlorobenzal)phthalide

    Purity:
    ≥ 98% (GC)
    Synonym:
    3-(4-Chlorobenzylidene)isobenzofuran-1(3H)-one
    Catalog Number:
    44491
    CAS Number:
    20526-97-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD23115631
    Molecular Formula:
    C15H9ClO2
    Molecular Weight:
    256.69
    Specification Sheet SDS

  • 4-Chloro-1,3-dioxolan-2-one

    Purity:
    ≥ 95% (GC)
    Synonym:
    4-Chloro-2-oxo-1,3-dioxolane
    Catalog Number:
    44489
    CAS Number:
    3967-54-2
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD00005383
    Molecular Formula:
    C3H3ClO3
    Molecular Weight:
    122.5
    Specification Sheet SDS

  • 4-Methoxybenzyl 3-Chloromethyl-7-(2-phenylacetamido)-3-cephem-4-carboxylate

    Purity:
    ≥ 98%
    Synonym:
    3-Chloromethyl-7-(2-phenylacetamido)-3-cephem-4-carboxylic acid4-methoxybenzyl ester
    Catalog Number:
    44490
    CAS Number:
    104146-10-3
    Purity Limit:
    ≥ 98%
    MDL NO:
    MFCD00191253
    Molecular Formula:
    C24H23ClN2O5S
    Molecular Weight:
    486.97
    Specification Sheet SDS

  • 2'-Bromospiro[fluorene-9,9'-xanthene]

    Purity:
    ≥ 97% (GC)
    Catalog Number:
    44475
    CAS Number:
    1477458-14-2
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD31814409
    Molecular Formula:
    C25H15BrO
    Molecular Weight:
    411.3
    Specification Sheet SDS

  • 2,3-Bis(4-chlorophenyl)-5-phenyltetrazolium chloride

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    44485
    CAS Number:
    135788-08-8
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00060008
    Molecular Formula:
    C19H13Cl3N4
    Molecular Weight:
    403.69
    Specification Sheet SDS

  • 3,6-Dichloro-1,2,4,5-tetrazine

    Purity:
    ≥ 97% (HPLC)
    Catalog Number:
    44482
    CAS Number:
    106131-61-7
    Purity Limit:
    ≥ 97% (HPLC)
    MDL NO:
    MFCD22042702
    Molecular Formula:
    C2Cl2N4
    Molecular Weight:
    150.95
    Specification Sheet SDS
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