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Heterocyclic Building Blocks

3770
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  • 1-Methyl-2-pyrrolidinone, distilled

    Hazmat
    Purity:
    ≥ 99.5% (Assay)
    Synonym:
    N-Methyl-2-ketopyrrolidine
    Hazmat
    Catalog Number:
    00741
    Purity Limit:
    ≥ 99.5% (Assay)
    CAS Number:
    872-50-4
    MDL NO:
    MFCD00003193
    Molecular Formula:
    C5H9NO
    Molecular Weight:
    99.13
    Specification Sheet SDS

  • N-Acetyl-5-methoxytryptamine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Melatonin
    Catalog Number:
    09492
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    73-31-4
    MDL NO:
    MFCD00005655
    Molecular Formula:
    C13H16N2O2
    Molecular Weight:
    232.28
    Specification Sheet SDS

  • 1-Boc-4-piperidone

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    tert-Butyl 4-oxo-1-piperidinecarboxylate
    Catalog Number:
    05037
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    79099-07-3
    MDL NO:
    MFCD00151800
    Molecular Formula:
    C10H17NO3
    Molecular Weight:
    199.24
    Specification Sheet SDS

  • 5-(Ethylthio)-1H-tetrazole

    Hazmat
    Purity:
    ≥ 99% (Assay by titration)
    Synonym:
    5-Ethylsulfanyl-1H-tetrazole
    Hazmat
    Catalog Number:
    01881
    Purity Limit:
    ≥ 99% (Assay by titration)
    CAS Number:
    89797-68-2
    MDL NO:
    MFCD00068733
    Molecular Formula:
    C3H6N4S
    Molecular Weight:
    130.18
    Specification Sheet SDS

  • Imidazole

    Hazmat
    Purity:
    ≥ 99% (Assay)
    Synonym:
    1,3-Diaza-2,4-cyclopentadiene
    Hazmat
    Catalog Number:
    00418
    Purity Limit:
    ≥ 99% (Assay)
    CAS Number:
    288-32-4
    MDL NO:
    MFCD00005183
    Molecular Formula:
    C3H4N2
    Molecular Weight:
    68.08
    Specification Sheet SDS

  • Adenine hydrochloride

    Purity:
    ≥ 99% (Assay)
    Synonym:
    6-Aminopurine hydrochoride
    Catalog Number:
    00005
    Purity Limit:
    ≥ 99% (Assay)
    CAS Number:
    2922-28-3, 6055-72-7
    MDL NO:
    MFCD00075782
    Molecular Formula:
    C5H5N5·HCl
    Molecular Weight:
    171.6
    Specification Sheet SDS

  • Allantoin

    Grade:
    meets USP specifications
    Purity:
    98.5-101.0% (Assay)
    Synonym:
    5-Ureidohydantoin
    Catalog Number:
    30702
    Grade:
    meets USP specifications
    Purity Limit:
    98.5-101.0% (Assay)
    CAS Number:
    97-59-6
    MDL NO:
    MFCD00005260
    Molecular Formula:
    C4H6N4O3
    Molecular Weight:
    158.12
    Specification Sheet SDS

  • 1-Methyl-2-pyrrolidinone, distilled

    Hazmat
    Grade:
    ACS reagent
    Purity:
    ≥ 99% (GC)
    Synonym:
    N-Methyl-2-ketopyrrolidine
    Hazmat
    Catalog Number:
    30063
    Grade:
    ACS reagent
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    872-50-4
    MDL NO:
    MFCD00003193
    Molecular Formula:
    C5H9NO
    Molecular Weight:
    99.13
    Specification Sheet SDS

  • 2-Amino-1H-benzimidazole

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    2-Aminobenzimidazole
    Catalog Number:
    26960
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    934-32-7
    MDL NO:
    MFCD00005596
    Molecular Formula:
    C7H7N3
    Molecular Weight:
    133.15
    Specification Sheet SDS

  • 2,2,6,6-Tetramethylpiperidine

    Hazmat
    Purity:
    ≥ 99% (GC)
    Synonym:
    Norpempidine
    Hazmat
    Catalog Number:
    24504
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    768-66-1
    MDL NO:
    MFCD00005985
    Molecular Formula:
    C9H19N
    Molecular Weight:
    141.26
    Specification Sheet SDS

  • Tryptamine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    1H-Indole-3-ethanamine
    Catalog Number:
    21918
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    61-54-1
    MDL NO:
    MFCD00005661
    Molecular Formula:
    C10H12N2
    Molecular Weight:
    160.22
    Specification Sheet SDS

  • 5-Benzyloxyindole

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    5-Benzyloxy-1H-indole
    Catalog Number:
    21882
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    1215-59-4
    MDL NO:
    MFCD00005676
    Molecular Formula:
    C15H13NO
    Molecular Weight:
    223.27
    Specification Sheet SDS

  • Kojic acid

    Purity:
    ≥ 99% (Assay)
    Synonym:
    2-Hydroxymethyl-5-hydroxy-1,4-pyrone
    Catalog Number:
    21857
    Purity Limit:
    ≥ 99% (Assay)
    CAS Number:
    501-30-4
    MDL NO:
    MFCD00006580
    Molecular Formula:
    C6H6O4
    Molecular Weight:
    142.11
    Specification Sheet SDS

  • Morpholine

    Hazmat
    Purity:
    ≥ 99% (GC)
    Hazmat
    Catalog Number:
    14091
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    110-91-8
    MDL NO:
    MFCD00005972
    Molecular Formula:
    C4H9NO
    Molecular Weight:
    87.12
    Specification Sheet SDS

  • Piperazine,anhydrous

    Hazmat
    Purity:
    ≥ 99% (GC)
    Synonym:
    1,4-Diazacyclohexane
    Hazmat
    Catalog Number:
    06899
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    110-85-0
    MDL NO:
    MFCD00005953
    Molecular Formula:
    C4H10N2
    Molecular Weight:
    86.14
    Specification Sheet SDS

  • N-Methylmorpholine

    Hazmat
    Purity:
    ≥ 99% (Assay)
    Synonym:
    4-Methylmorpholine
    Hazmat
    Catalog Number:
    02333
    Purity Limit:
    ≥ 99% (Assay)
    CAS Number:
    109-02-4
    MDL NO:
    MFCD00006175
    Molecular Formula:
    C5H11NO
    Molecular Weight:
    101.15
    Specification Sheet SDS

  • 4-Methylumbelliferone sodium salt

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    7-Hydroxy-4-methylcoumarin
    Catalog Number:
    49326
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    5980-33-6
    MDL NO:
    MFCD00069856
    Molecular Formula:
    C10H7NaO3
    Molecular Weight:
    198.15
    Specification Sheet SDS

  • 3-Aminopyridine

    Hazmat
    Purity:
    ≥ 99% (GC)
    Synonym:
    3-Pyridinamine
    Hazmat
    Catalog Number:
    49318
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    462-08-8
    MDL NO:
    MFCD00006400
    Molecular Formula:
    C5H6N2
    Molecular Weight:
    94.11
    Specification Sheet

  • 3-Hydroxybenzoic acid

    Purity:
    ≥ 98% (GC)
    Synonym:
    m-Salicylic acid
    Catalog Number:
    49319
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    99-06-9
    MDL NO:
    MFCD00002506
    Molecular Formula:
    C7H6O3
    Molecular Weight:
    138.12
    Specification Sheet SDS

  • 3-Cyanopyridine

    Purity:
    ≥ 99% (GC)
    Synonym:
    3-Pyridinecarbonitrile
    Catalog Number:
    46568
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    100-54-9
    MDL NO:
    MFCD00006372
    Molecular Formula:
    C6H4N2
    Molecular Weight:
    104.11
    SDS

  • 2-Cyanopyridine

    Purity:
    ≥ 99% (GC)
    Synonym:
    2-Pyridinecarbonitrile
    Catalog Number:
    46569
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    100-70-9
    MDL NO:
    MFCD00006218
    Molecular Formula:
    C6H4N2
    Molecular Weight:
    104.11
    SDS

  • Methyl 3-bromothiophene-2-carboxylate

    Purity:
    ≥ 98% (GC)
    Synonym:
    3-Bromothiophene-2-carboxylic acid methyl ester
    Catalog Number:
    45009
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    26137-08-6
    MDL NO:
    MFCD00173839
    Molecular Formula:
    C6H5BrO2S
    Molecular Weight:
    221.07
    Specification Sheet SDS

  • 2-Amino-4-chloro-5-formyl-3-thiophenecarbonitrile

    Hazmat
    Purity:
    ≥ 98% (GC)
    Synonym:
    2-Amino-4-chloro-3-cyano-5-formylthiophene
    Hazmat
    Catalog Number:
    45007
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    104366-23-6
    MDL NO:
    MFCD03788265
    Molecular Formula:
    C6H3ClN2OS
    Molecular Weight:
    186.61
    Specification Sheet SDS

  • 2,5-Diiodothiophene

    Purity:
    ≥ 97% (GC)
    Catalog Number:
    45018
    Purity Limit:
    ≥ 97% (GC)
    CAS Number:
    625-88-7
    MDL NO:
    MFCD00014525
    Molecular Formula:
    C4H2I2S
    Molecular Weight:
    335.93
    Specification Sheet SDS

  • Methyl 5-chlorothiophene-2-carboxylate

    Purity:
    ≥ 98% (GC)
    Synonym:
    5-Chlorothiophene-2-carboxylic acid methyl ester
    Catalog Number:
    45019
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    35475-03-7
    MDL NO:
    MFCD06203698
    Molecular Formula:
    C6H5ClO2S
    Molecular Weight:
    176.61
    Specification Sheet SDS

  • 4,6-Dichloro-1,3,5-triazin-2-amine

    Purity:
    ≥ 95% (HPLC)
    Synonym:
    2-Amino-4,6-dichloro-1,3,5-triazine
    Catalog Number:
    45041
    Purity Limit:
    ≥ 95% (HPLC)
    CAS Number:
    933-20-0
    MDL NO:
    MFCD00078331
    Molecular Formula:
    C3H2Cl2N4
    Molecular Weight:
    164.98
    Specification Sheet SDS

  • 3-Acetyl-2-(aminosulfonyl)-5-chlorothiophene

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    3-Acetyl-5-chloro-2-thiophenesulfonamide
    Catalog Number:
    45004
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    160982-10-5
    MDL NO:
    MFCD09033309
    Molecular Formula:
    C6H6ClNO3S2
    Molecular Weight:
    239.69
    Specification Sheet SDS

  • 3,4-Dichlorothiophene 1,1-dioxide

    Purity:
    ≥ 96% (GC)
    Catalog Number:
    45021
    Purity Limit:
    ≥ 96% (GC)
    CAS Number:
    52819-14-4
    MDL NO:
    MFCD00187130
    Molecular Formula:
    C4H2Cl2O2S
    Molecular Weight:
    185.02
    Specification Sheet SDS

  • tert-Butyl (4-bromothiophen-2-yl)carbamate

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    tert-Butyl (4-Bromo-2-thienyl)carbamate
    Catalog Number:
    45026
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    868387-45-5
    MDL NO:
    MFCD13195314
    Molecular Formula:
    C9H12BrNO2S
    Molecular Weight:
    278.16
    Specification Sheet SDS

  • 2-Chloro-3-methylthiophene

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    45010
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    14345-97-2
    MDL NO:
    MFCD00130083
    Molecular Formula:
    C5H5ClS
    Molecular Weight:
    132.61
    Specification Sheet SDS

  • 2,5-Dibromo-3,4-dinitrothiophene

    Purity:
    ≥ 99% (GC)
    Catalog Number:
    45015
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    52431-30-8
    MDL NO:
    MFCD00015537
    Molecular Formula:
    C4Br2N2O4S
    Molecular Weight:
    331.92
    Specification Sheet SDS

  • 2,5-Dibromothiophene

    Purity:
    ≥ 99% (GC)
    Catalog Number:
    45024
    Purity Limit:
    ≥ 99% (GC)
    CAS Number:
    3141-27-3
    MDL NO:
    MFCD00005420
    Molecular Formula:
    C4H2Br2S
    Molecular Weight:
    241.93
    Specification Sheet SDS

  • 2-Methyl-4,6-bis(trichloromethyl)-1,3,5-triazine

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    45037
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    949-42-8
    MDL NO:
    MFCD00023178
    Molecular Formula:
    C6H3Cl6N3
    Molecular Weight:
    329.81
    Specification Sheet SDS

  • 2,4-Dichloro-6-phenyl-1,3,5-triazine

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    45040
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    1700-02-3
    MDL NO:
    MFCD00047340
    Molecular Formula:
    C9H5Cl2N3
    Molecular Weight:
    226.06
    Specification Sheet SDS

  • 2-(4-Bromophenyl)-4,6-diphenylpyrimidine

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    45030
    Purity Limit:
    ≥ 98% (HPLC)
    CAS Number:
    457613-56-8
    MDL NO:
    MFCD29477690
    Molecular Formula:
    C22H15BrN2
    Molecular Weight:
    387.28
    Specification Sheet SDS

  • 3-Chloro-1,2,4-triazole

    Purity:
    ≥ 99% (HPLC)
    Catalog Number:
    45043
    Purity Limit:
    ≥ 99% (HPLC)
    CAS Number:
    6818-99-1
    MDL NO:
    MFCD00128812
    Molecular Formula:
    C2H2ClN3
    Molecular Weight:
    103.51
    Specification Sheet SDS

  • 2,5-Dichloro-3-methylthiophene

    Purity:
    ≥ 96% (GC)
    Catalog Number:
    45014
    Purity Limit:
    ≥ 96% (GC)
    CAS Number:
    17249-90-0
    MDL NO:
    MFCD00022490
    Molecular Formula:
    C5H4Cl2S
    Molecular Weight:
    167.05
    Specification Sheet SDS

  • 5-Chlorothiophene-2-carboxaldehyde

    Purity:
    ≥ 95% (GC)
    Synonym:
    2-Chloro-5-formylthiophene
    Catalog Number:
    45008
    Purity Limit:
    ≥ 95% (GC)
    CAS Number:
    7283-96-7
    MDL NO:
    MFCD00047090
    Molecular Formula:
    C5H3ClOS
    Molecular Weight:
    146.59
    Specification Sheet SDS

  • Ethyl 5-chlorothiophene-2-carboxylate

    Purity:
    ≥ 98% (GC)
    Synonym:
    5-Chlorothiophene-2-carboxylic acid ethyl ester
    Catalog Number:
    45001
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    5751-82-6
    MDL NO:
    MFCD00051732
    Molecular Formula:
    C7H7ClO2S
    Molecular Weight:
    190.64
    Specification Sheet SDS

  • 2-Bromo-5-dodecylthiophene

    Purity:
    ≥ 95% (GC)
    Catalog Number:
    45002
    Purity Limit:
    ≥ 95% (GC)
    CAS Number:
    153561-74-1
    MDL NO:
    MFCD22572689
    Molecular Formula:
    C16H27BrS
    Molecular Weight:
    331.36
    Specification Sheet SDS

  • 2,3,5-Tribromo-4-methylthiophene

    Purity:
    ≥ 97% (GC)
    Catalog Number:
    45023
    Purity Limit:
    ≥ 97% (GC)
    CAS Number:
    67869-13-0
    MDL NO:
    MFCD00130086
    Molecular Formula:
    C5H3Br3S
    Molecular Weight:
    334.85
    Specification Sheet SDS

  • 2-Chloro-5-methylthiophene

    Hazmat
    Purity:
    ≥ 96% (GC)
    Hazmat
    Catalog Number:
    45005
    Purity Limit:
    ≥ 96% (GC)
    CAS Number:
    17249-82-0
    MDL NO:
    MFCD01632145
    Molecular Formula:
    C5H5ClS
    Molecular Weight:
    132.61
    Specification Sheet SDS

  • 2-[3'-Bromo[1,1'-biphenyl]-3-yl]-4,6-diphenyl-1,3,5-triazine

    Purity:
    ≥ 98%
    Catalog Number:
    45031
    Purity Limit:
    ≥ 98%
    CAS Number:
    1606981-69-4
    MDL NO:
    MFCD30730127
    Molecular Formula:
    C27H18BrN3
    Molecular Weight:
    464.37
    Specification Sheet SDS

  • 2,5-Dibromo-3,4-thiophenedicarboxylic anhydride

    Purity:
    ≥ 98% (GC)
    Synonym:
    4,6-Dibromothieno[3,4-c]furan-1,3-dione
    Catalog Number:
    45020
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    1015423-45-6
    MDL NO:
    MFCD27923031
    Molecular Formula:
    C6Br2O3S
    Molecular Weight:
    311.93
    Specification Sheet SDS

  • 2-Chloro-4,6-diamino-1,3,5-triazine

    Purity:
    ≥ 95% (HPLC)
    Synonym:
    2,4-Diamino-6-chloro-1,3,5-triazine
    Catalog Number:
    45032
    Purity Limit:
    ≥ 95% (HPLC)
    CAS Number:
    3397-62-4
    MDL NO:
    MFCD00006054
    Molecular Formula:
    C3H4ClN5
    Molecular Weight:
    145.55
    Specification Sheet SDS

  • 2-(3-Carboxyanilino)-4,6-dichloro-1,3,5-triazine

    Purity:
    ≥ 95% (Assay by titration)
    Catalog Number:
    45033
    Purity Limit:
    ≥ 95% (Assay by titration)
    CAS Number:
    26940-56-7
    MDL NO:
    MFCD00059762
    Molecular Formula:
    C10H6Cl2N4O2
    Molecular Weight:
    285.08
    Specification Sheet SDS

  • 2-([1,1'-Biphenyl]-3-yl)-4,6-dichloro-1,3,5-triazine

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    45039
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    1402225-89-1
    MDL NO:
    MFCD30543410
    Molecular Formula:
    C15H9Cl2N3
    Molecular Weight:
    302.16
    Specification Sheet SDS

  • 3-Acetyl-2,5-dichlorothiophene

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    45003
    Purity Limit:
    ≥ 98% (GC)
    CAS Number:
    36157-40-1
    MDL NO:
    MFCD00014522
    Molecular Formula:
    C6H4Cl2OS
    Molecular Weight:
    195.06
    Specification Sheet SDS

  • 4,5-Dibromo-1H-1,2,3-triazole

    Purity:
    ≥ 98% (Assay by titration)
    Catalog Number:
    45044
    Purity Limit:
    ≥ 98% (Assay by titration)
    CAS Number:
    15294-81-2
    MDL NO:
    MFCD08062401
    Molecular Formula:
    C2HBr2N3
    Molecular Weight:
    226.86
    Specification Sheet SDS

  • 2,4-Dibromothiophene

    Purity:
    ≥ 90% (GC)
    Catalog Number:
    45025
    Purity Limit:
    ≥ 90% (GC)
    CAS Number:
    3140-92-9
    MDL NO:
    MFCD00043889
    Molecular Formula:
    C4H2Br2S
    Molecular Weight:
    241.93
    Specification Sheet SDS
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