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🌟 NEW: Customizable Macrocyclic Peptide Libraries

Heterocyclic Building Blocks

3723
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  • 5-Bromo-2-thiophenesulfonyl chloride

    Hazmat
    Purity:
    ≥ 98% (GC)
    Hazmat
    Catalog Number:
    44972
    CAS Number:
    55854-46-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00084909
    Molecular Formula:
    C4H2BrClO2S2
    Molecular Weight:
    261.53
    Specification Sheet SDS

  • 3-Bromo-2-chlorothiophene

    Purity:
    ≥ 97% (GC)
    Catalog Number:
    44981
    CAS Number:
    40032-73-3
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00043883
    Molecular Formula:
    C4H2BrClS
    Molecular Weight:
    197.47
    Specification Sheet SDS

  • 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44963
    CAS Number:
    64359-81-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD04034673
    Molecular Formula:
    C11H17Cl2NOS
    Molecular Weight:
    282.22
    Specification Sheet SDS

  • 2-Amino-5-chlorobenzothiazole

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    44958
    CAS Number:
    20358-00-3
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00205355
    Molecular Formula:
    C7H5ClN2S
    Molecular Weight:
    184.64
    Specification Sheet SDS

  • 3-Bromothiophene-2-carboxaldehyde

    Purity:
    ≥ 95% (GC)
    Synonym:
    3-Bromo-2-formylthiophene
    Catalog Number:
    44976
    CAS Number:
    930-96-1
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD00126680
    Molecular Formula:
    C5H3BrOS
    Molecular Weight:
    191.04
    Specification Sheet SDS

  • 5-Chloro-2-methylbenzothiazole

    Purity:
    ≥ 99% (GC)
    Catalog Number:
    44954
    CAS Number:
    1006-99-1
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00022881
    Molecular Formula:
    C8H6ClNS
    Molecular Weight:
    183.65
    Specification Sheet SDS

  • 6-Bromo-2-chlorobenzothiazole

    Purity:
    ≥ 96% (GC)
    Catalog Number:
    44947
    CAS Number:
    80945-86-4
    Purity Limit:
    ≥ 96% (GC)
    MDL NO:
    MFCD04971822
    Molecular Formula:
    C7H3BrClNS
    Molecular Weight:
    248.52
    Specification Sheet SDS

  • 3-Chlorothiophene

    Hazmat
    Purity:
    ≥ 97% (GC)
    Hazmat
    Catalog Number:
    44970
    CAS Number:
    17249-80-8
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00043887
    Molecular Formula:
    C4H3ClS
    Molecular Weight:
    118.58
    Specification Sheet SDS

  • 2,5-Dichlorothiophene

    Hazmat
    Purity:
    ≥ 97% (GC)
    Hazmat
    Catalog Number:
    44974
    CAS Number:
    3172-52-9
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00005423
    Molecular Formula:
    C4H2Cl2S
    Molecular Weight:
    153.02
    Specification Sheet SDS

  • 2-Chlorobenzothiazole

    Purity:
    ≥ 98% (GC)
    Synonym:
    2-Benzothiazolyl chloride
    Catalog Number:
    44957
    CAS Number:
    615-20-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00005776
    Molecular Formula:
    C7H4ClNS
    Molecular Weight:
    169.63
    Specification Sheet SDS

  • Methyl 2-bromothiazole-5-carboxylate

    Purity:
    ≥ 95% (GC)
    Synonym:
    2-Bromothiazole-5-carboxylic acid methyl ester
    Catalog Number:
    44961
    CAS Number:
    54045-74-8
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD03788565
    Molecular Formula:
    C5H4BrNO2S
    Molecular Weight:
    222.06
    Specification Sheet SDS

  • 2-Bromo-5-nitrothiazole

    Purity:
    ≥ 97% (GC)
    Catalog Number:
    44948
    CAS Number:
    3034-48-8
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00005317
    Molecular Formula:
    C3HBrN2O2S
    Molecular Weight:
    209.02
    Specification Sheet SDS

  • 2-(4-Bromophenyl)benzothiazole

    Purity:
    ≥ 98% (GC)
    Synonym:
    1-(2-Benzothiazolyl)-4-bromobenzene
    Catalog Number:
    44946
    CAS Number:
    19654-19-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00579199
    Molecular Formula:
    C13H8BrNS
    Molecular Weight:
    290.18
    Specification Sheet SDS

  • 2-Acetamido-4-methylthiazole-5-sulfonyl chloride

    Hazmat
    Purity:
    ≥ 98% (HPLC)
    Hazmat
    Catalog Number:
    44952
    CAS Number:
    69812-29-9
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00005320
    Molecular Formula:
    C6H7ClN2O3S2
    Molecular Weight:
    254.7
    Specification Sheet SDS

  • 2-Chloro-5-(chloromethyl)thiazole

    Hazmat
    Purity:
    ≥ 98% (Assay)
    Hazmat
    Catalog Number:
    44955
    CAS Number:
    105827-91-6
    Purity Limit:
    ≥ 98% (Assay)
    MDL NO:
    MFCD01073549
    Molecular Formula:
    C4H3Cl2NS
    Molecular Weight:
    168.04
    Specification Sheet SDS

  • 5-Bromo-2-methylbenzothiazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44949
    CAS Number:
    63837-11-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00603096
    Molecular Formula:
    C8H6BrNS
    Molecular Weight:
    228.11
    Specification Sheet SDS

  • 2-Chlorolepidine

    Purity:
    ≥ 98% (GC)
    Synonym:
    2-Chloro-4-methylquinoline
    Catalog Number:
    44915
    CAS Number:
    634-47-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00006742
    Molecular Formula:
    C10H8ClN
    Molecular Weight:
    177.63
    Specification Sheet SDS

  • 2-Amino-4-chlorobenzothiazole

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    44942
    CAS Number:
    19952-47-7
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00005791
    Molecular Formula:
    C7H5ClN2S
    Molecular Weight:
    184.64
    Specification Sheet SDS

  • 3-Chloro-4-morpholino-1,2,5-thiadiazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44938
    CAS Number:
    30165-96-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00274160
    Molecular Formula:
    C6H8ClN3OS
    Molecular Weight:
    205.66
    Specification Sheet SDS

  • 5-Chloro-2-(methylthio)benzothiazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44944
    CAS Number:
    3507-41-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00186100
    Molecular Formula:
    C8H6ClNS2
    Molecular Weight:
    215.71
    Specification Sheet SDS

  • 2-Bromo-5-methylthiazole

    Purity:
    ≥ 99% (GC)
    Catalog Number:
    44950
    CAS Number:
    41731-23-1
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD08460610
    Molecular Formula:
    C4H4BrNS
    Molecular Weight:
    178.05
    Specification Sheet SDS

  • 2-(4-Chlorophenyl)benzothiazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44945
    CAS Number:
    6265-91-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00030229
    Molecular Formula:
    C13H8ClNS
    Molecular Weight:
    245.72
    Specification Sheet SDS

  • 2-Bromo-4-methylthiazole-5-carboxylic acid

    Purity:
    ≥ 98% (Assay by titration)
    Catalog Number:
    44951
    CAS Number:
    40003-41-6
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD03822128
    Molecular Formula:
    C5H4BrNO2S
    Molecular Weight:
    222.06
    Specification Sheet SDS

  • 4-Chloroquinoline 1-oxide

    Purity:
    ≥ 97% (GC)
    Synonym:
    4-Chloroquinoline N-oxide
    Catalog Number:
    44926
    CAS Number:
    4637-59-6
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD18377747
    Molecular Formula:
    C9H6ClNO
    Molecular Weight:
    179.6
    Specification Sheet SDS

  • 2-Iodobenzothiazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44941
    CAS Number:
    1123-99-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00971971
    Molecular Formula:
    C7H4INS
    Molecular Weight:
    261.08
    Specification Sheet SDS

  • 2-Amino-6-chlorobenzothiazole

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    44943
    CAS Number:
    95-24-9
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00053557
    Molecular Formula:
    C7H5ClN2S
    Molecular Weight:
    184.64
    Specification Sheet SDS

  • 2,6-Dichloroquinoxaline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44931
    CAS Number:
    18671-97-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00839695
    Molecular Formula:
    C8H4Cl2N2
    Molecular Weight:
    199.03
    Specification Sheet SDS

  • 7-Bromo-2H-1,4-benzothiazin-3(4H)-one

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44940
    CAS Number:
    90814-91-8
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD02660583
    Molecular Formula:
    C8H6BrNOS
    Molecular Weight:
    244.11
    Specification Sheet SDS

  • 6-Chloro-2-methylquinoline

    Purity:
    ≥ 98% (GC)
    Synonym:
    6-Chloroquinaldine
    Catalog Number:
    44918
    CAS Number:
    92-46-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00051735
    Molecular Formula:
    C10H8ClN
    Molecular Weight:
    177.63
    Specification Sheet SDS

  • 4,6-Dichloroquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44922
    CAS Number:
    4203-18-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00156141
    Molecular Formula:
    C9H5Cl2N
    Molecular Weight:
    198.05
    Specification Sheet SDS

  • 6-Bromoquinoxaline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44927
    CAS Number:
    50998-17-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00837757
    Molecular Formula:
    C8H5BrN2
    Molecular Weight:
    209.05
    Specification Sheet SDS

  • 5,6-Dibromo-2,1,3-benzothiadiazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44939
    CAS Number:
    18392-81-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD20257910
    Molecular Formula:
    C6H2Br2N2S
    Molecular Weight:
    293.96
    Specification Sheet SDS

  • 2,6-Dichloroquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44924
    CAS Number:
    1810-72-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD03427194
    Molecular Formula:
    C9H5Cl2N
    Molecular Weight:
    198.05
    Specification Sheet SDS

  • 2-Chloro-3-quinolinecarboxaldehyde

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44919
    CAS Number:
    73568-25-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00130079
    Molecular Formula:
    C10H6ClNO
    Molecular Weight:
    191.61
    Specification Sheet SDS

  • 2,3-Dichloro-6-nitroquinoxaline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44932
    CAS Number:
    2379-60-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00454905
    Molecular Formula:
    C8H3Cl2N3O2
    Molecular Weight:
    244.03
    Specification Sheet SDS

  • 6-Bromo-2-chloroquinoline-3-carboxaldehyde

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44906
    CAS Number:
    73568-35-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD08706312
    Molecular Formula:
    C10H5BrClNO
    Molecular Weight:
    270.51
    Specification Sheet SDS

  • 2-Chloroquinoxaline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44930
    CAS Number:
    1448-87-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00043907
    Molecular Formula:
    C8H5ClN2
    Molecular Weight:
    164.59
    Specification Sheet SDS

  • 3,4-Dichloro-1,2,5-thiadiazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44935
    CAS Number:
    5728-20-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00010072
    Molecular Formula:
    C2Cl2N2S
    Molecular Weight:
    155.0
    Specification Sheet SDS

  • 8-Chloroquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44917
    CAS Number:
    611-33-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00047618
    Molecular Formula:
    C9H6ClN
    Molecular Weight:
    163.6
    Specification Sheet SDS

  • 4-Amino-5-chloro-2,1,3-benzothiadiazole

    Purity:
    ≥ 97% (Assay by titration)
    Synonym:
    4-Amino-5-chloropiazthiole
    Catalog Number:
    44937
    CAS Number:
    30536-19-7
    Purity Limit:
    ≥ 97% (Assay by titration)
    MDL NO:
    MFCD00465908
    Molecular Formula:
    C6H4ClN3S
    Molecular Weight:
    185.63
    Specification Sheet SDS

  • 8-Hydroxy-7-iodoquinoline-5-sulfonic acid

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    Ferron
    Catalog Number:
    44910
    CAS Number:
    547-91-1
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00006793
    Molecular Formula:
    C9H6INO4S
    Molecular Weight:
    351.11
    Specification Sheet SDS

  • 6-Amino-5-bromoquinoxaline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44929
    CAS Number:
    50358-63-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00799024
    Molecular Formula:
    C8H6BrN3
    Molecular Weight:
    224.06
    Specification Sheet SDS

  • 2-Chloroquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44913
    CAS Number:
    612-62-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00006741
    Molecular Formula:
    C9H6ClN
    Molecular Weight:
    163.6
    Specification Sheet SDS

  • 5-(2-Amino-4-chloro-5-sulfamoylphenyl)-1H-tetrazole

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    4-Amino-2-chloro-5-(1H-tetrazol-5-yl)benzenesulfonamide
    Catalog Number:
    44934
    CAS Number:
    82212-14-4
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD11870108
    Molecular Formula:
    C7H7ClN6O2S
    Molecular Weight:
    274.68
    Specification Sheet SDS

  • 4-Chloro-6-methylquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44909
    CAS Number:
    18436-71-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD02684204
    Molecular Formula:
    C10H8ClN
    Molecular Weight:
    177.63
    Specification Sheet SDS

  • 7-Bromo-2,1,3-benzothiadiazole-4-carboxaldehyde

    Purity:
    ≥ 98% (GC)
    Synonym:
    7-Bromo-4-formyl-2,1,3-benzothiadiazole
    Catalog Number:
    44936
    CAS Number:
    1071224-34-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD23704428
    Molecular Formula:
    C7H3BrN2OS
    Molecular Weight:
    243.08
    Specification Sheet SDS

  • 7-Chloroquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44916
    CAS Number:
    612-61-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00956370
    Molecular Formula:
    C9H6ClN
    Molecular Weight:
    163.6
    Specification Sheet SDS

  • 2,4-Dichloroquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44921
    CAS Number:
    703-61-7
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00023939
    Molecular Formula:
    C9H5Cl2N
    Molecular Weight:
    198.05
    Specification Sheet SDS

  • N-(4-Chloro-3-cyano-7-ethoxy-6-quinolinyl)acetamide

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    44920
    CAS Number:
    848133-76-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD09263704
    Molecular Formula:
    C14H12ClN3O2
    Molecular Weight:
    289.72
    Specification Sheet SDS

  • 4-Chloro-6,7-dimethoxyquinoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    44896
    CAS Number:
    35654-56-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD07778437
    Molecular Formula:
    C11H10ClNO2
    Molecular Weight:
    223.66
    Specification Sheet SDS
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