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Building Blocks

7871
Sub Categories
Fluorinated Building Blocks 1631
Heterocyclic Building Blocks 3724
Non-Heterocyclic Building Blocks 2575

  • Quinuclidine

    Hazmat
    Purity:
    ≥ 96% (GC)
    Synonym:
    1-Azabicyclo[2.2.2]octane
    Hazmat
    Catalog Number:
    40884
    CAS Number:
    100-76-5
    Purity Limit:
    ≥ 96% (GC)
    MDL NO:
    MFCD00006690
    Molecular Formula:
    C7H13N
    Molecular Weight:
    111.19
    Specification Sheet SDS

  • N,N'-Di-tert-butylethylenediamine

    Hazmat
    Purity:
    ≥ 98% (GC)
    Synonym:
    1,2-Bis(tert-butylamino)ethane
    Hazmat
    Catalog Number:
    40887
    CAS Number:
    4062-60-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00014996
    Molecular Formula:
    C10H24N2
    Molecular Weight:
    172.32
    Specification Sheet SDS

  • Sodium pyrimidine-2-sulfinate

    Purity:
    ≥ 97% (HPLC)
    Catalog Number:
    40769
    CAS Number:
    2188151-68-8
    Purity Limit:
    ≥ 97% (HPLC)
    MDL NO:
    MFCD32068077
    Molecular Formula:
    C4H3N2NaO2S
    Molecular Weight:
    166.13
    Specification Sheet SDS

  • Trimethyl(vinyloxy)silane

    Hazmat
    Purity:
    ≥ 97% (GC)
    Synonym:
    (Trimethylsiloxy)ethylene
    Hazmat
    Catalog Number:
    40550
    CAS Number:
    6213-94-1
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00054764
    Molecular Formula:
    C5H12OSi
    Molecular Weight:
    116.24
    Specification Sheet SDS

  • 1-(tert-Butyldimethylsilyloxy)-1-methoxyethene

    Hazmat
    Purity:
    ≥ 97% (GC)
    Synonym:
    tert-Butyl[(1-methoxyvinyl)oxy]dimethylsilane
    Hazmat
    Catalog Number:
    40547
    CAS Number:
    77086-38-5
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD02683524
    Molecular Formula:
    C9H20O2Si
    Molecular Weight:
    188.34
    Specification Sheet SDS

  • 4-Trimethylsilyl-3-butyn-2-ol

    Hazmat
    Purity:
    ≥ 97% (GC)
    Hazmat
    Catalog Number:
    40463
    CAS Number:
    6999-19-5
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00190213
    Molecular Formula:
    C7H14OSi
    Molecular Weight:
    142.27
    Specification Sheet SDS

  • 4-[(Trimethylsilyl)ethynyl]aniline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    40459
    CAS Number:
    75867-39-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD03695479
    Molecular Formula:
    C11H15NSi
    Molecular Weight:
    189.33
    Specification Sheet SDS

  • 3-(Chlorodimethylsilyl)propyl methacrylate (stabilized with BHT)

    Hazmat
    Purity:
    ≥ 90% (GC)
    Synonym:
    Methacrylic acid 3-(chlorodimethylsilyl)propyl ester (stabilized with BHT)
    Hazmat
    Catalog Number:
    40425
    CAS Number:
    24636-31-5
    Purity Limit:
    ≥ 90% (GC)
    MDL NO:
    MFCD00053899
    Molecular Formula:
    C9H17ClO2Si
    Molecular Weight:
    220.77
    Specification Sheet SDS

  • Trimethylsilyl acetate

    Hazmat
    Purity:
    ≥ 98% (GC)
    Synonym:
    Acetic acid trimethylsilyl ester
    Hazmat
    Catalog Number:
    40413
    CAS Number:
    2754-27-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00008695
    Molecular Formula:
    C5H12O2Si
    Molecular Weight:
    132.23
    Specification Sheet SDS

  • Trimethylsilyl propionate

    Hazmat
    Purity:
    ≥ 95% (GC)
    Synonym:
    Propionic acid trimethylsilyl ester
    Hazmat
    Catalog Number:
    40416
    CAS Number:
    16844-98-7
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD01632555
    Molecular Formula:
    C6H14O2Si
    Molecular Weight:
    146.26
    Specification Sheet SDS

  • Trimethylsilyl trifluoroacetate

    Hazmat
    Purity:
    ≥ 95% (GC)
    Synonym:
    Trifluoroacetic acid trimethylsilyl ester
    Hazmat
    Catalog Number:
    40415
    CAS Number:
    400-53-3
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD00000413
    Molecular Formula:
    C5H9F3O2Si
    Molecular Weight:
    186.21
    Specification Sheet SDS

  • 3-(Triallylsilyl)propyl acrylate (stabilized with MEHQ)

    Purity:
    ≥ 92% (GC)
    Synonym:
    Acrylic acid 3-(triallylsilyl)propyl ester (stabilized with MEHQ)
    Catalog Number:
    40401
    CAS Number:
    1990509-29-9
    Purity Limit:
    ≥ 92% (GC)
    MDL NO:
    MFCD29089372
    Molecular Formula:
    C15H24O2Si
    Molecular Weight:
    264.44
    Specification Sheet SDS

  • 5-Formyl-2-thiopheneboronic acid

    Purity:
    ≥ 96% (HPLC)
    Synonym:
    5-Formyl-2-thienylboronic acid
    Catalog Number:
    40394
    CAS Number:
    4347-33-5
    Purity Limit:
    ≥ 96% (HPLC)
    MDL NO:
    MFCD02093666
    Molecular Formula:
    C5H5BO3S
    Molecular Weight:
    155.96
    Specification Sheet SDS

  • 5-Formyl-2-furanboronic acid

    Hazmat
    Purity:
    95 - 105% (Assay by titration)
    Synonym:
    5-Formyl-2-furanylboronic acid
    Hazmat
    Catalog Number:
    40376
    CAS Number:
    27329-70-0
    Purity Limit:
    95 - 105% (Assay by titration)
    MDL NO:
    MFCD01114696
    Molecular Formula:
    C5H5BO4
    Molecular Weight:
    139.9
    Specification Sheet SDS

  • 2-Fluoro-4-methoxyphenylboronic acid

    Purity:
    97 - 105% (Assay by titration)
    Synonym:
    2-Fluoro-4-methoxybenzeneboronic acid
    Catalog Number:
    40317
    CAS Number:
    162101-31-7
    Purity Limit:
    97 - 105% (Assay by titration)
    MDL NO:
    MFCD04039323
    Molecular Formula:
    C7H8BFO3
    Molecular Weight:
    169.95
    Specification Sheet SDS

  • 4-Fluoro-2-formylphenylboronic acid

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    4-Fluoro-2-formylbenzeneboronic acid
    Catalog Number:
    40213
    CAS Number:
    825644-26-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD10697426
    Molecular Formula:
    C7H6BFO3
    Molecular Weight:
    167.93
    Specification Sheet SDS

  • 3-Ethoxy-4-fluorophenylboronic acid

    Purity:
    97 - 105% (Assay by titration)
    Synonym:
    3-Ethoxy-4-fluorobenzeneboronic acid
    Catalog Number:
    40215
    CAS Number:
    900174-65-4
    Purity Limit:
    97 - 105% (Assay by titration)
    MDL NO:
    MFCD09475831
    Molecular Formula:
    C8H10BFO3
    Molecular Weight:
    183.97
    Specification Sheet SDS

  • 1-Methyl-4-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl]piperazine

    Purity:
    ≥ 98% (GC)
    Synonym:
    3-(4-Methyl-1-piperazinylmethyl)benzeneboronic acid pinacol ester
    Catalog Number:
    40157
    CAS Number:
    883738-27-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD09266181
    Molecular Formula:
    C18H29BN2O2
    Molecular Weight:
    316.25
    SDS

  • 3-Chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine

    Purity:
    ≥ 98% (GC)
    Synonym:
    2-(5-Chloro-3-pyridyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
    Catalog Number:
    40042
    CAS Number:
    865186-94-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD06798284
    Molecular Formula:
    C11H15BClNO2
    Molecular Weight:
    239.51
    Specification Sheet SDS

  • 2-n-Butylimidazole

    Purity:
    ≥ 99% (Assay)
    Synonym:
    2-Butyl-1-H-imidazole
    Catalog Number:
    28396
    CAS Number:
    50790-93-7
    Purity Limit:
    ≥ 99% (Assay)
    MDL NO:
    MFCD00792664
    Molecular Formula:
    C7H12N2
    Molecular Weight:
    124.19
    Specification Sheet SDS

  • 4,4,5,5-Tetramethyl-2-(5-methylfuran-2-yl)-1,3,2-dioxaborolane

    Purity:
    ≥ 97% (GC)
    Synonym:
    (5-Methylfuran-2-yl)boronic acid pinacol ester
    Catalog Number:
    39914
    CAS Number:
    338998-93-9
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD03094689
    Molecular Formula:
    C11H17BO3
    Molecular Weight:
    208.06
    Specification Sheet SDS

  • 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)oxindole

    Purity:
    ≥ 96% (GC)
    Synonym:
    5-Oxindoleboronic acid pinacol ester
    Catalog Number:
    39884
    CAS Number:
    837392-64-0
    Purity Limit:
    ≥ 96% (GC)
    MDL NO:
    MFCD08669935
    Molecular Formula:
    C14H18BNO3
    Molecular Weight:
    259.11
    Specification Sheet SDS

  • Tributylsulfonium iodide

    Purity:
    ≥ 96% (Assay by titration)
    Synonym:
    Tri-N-butylsulfonium iodide
    Catalog Number:
    39875
    CAS Number:
    18146-62-8
    Purity Limit:
    ≥ 96% (Assay by titration)
    MDL NO:
    MFCD00671571
    Molecular Formula:
    C12H27IS
    Molecular Weight:
    330.31
    Specification Sheet SDS

  • 2-(3,5-Dinitrophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

    Purity:
    ≥ 98% (GC)
    Synonym:
    1,3-Dinitro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene
    Catalog Number:
    39951
    CAS Number:
    428820-95-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD11504965
    Molecular Formula:
    C12H15BN2O6
    Molecular Weight:
    294.07
    Specification Sheet SDS

  • 4'-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)[1,1'-biphenyl]-4-carbonitrile

    Purity:
    ≥ 96% (GC)
    Synonym:
    4-Cyanobiphenyl-4'-boronic acid pinacol ester
    Catalog Number:
    39949
    CAS Number:
    406482-72-2
    Purity Limit:
    ≥ 96% (GC)
    MDL NO:
    MFCD17015781
    Molecular Formula:
    C19H20BNO2
    Molecular Weight:
    305.18
    Specification Sheet SDS

  • 1-Methyl-1-propylpyrrolidinium bis(trifluoromethanesulfonyl)imide

    Purity:
    ≥ 98% (Assay by titration)
    Catalog Number:
    39861
    CAS Number:
    223437-05-6
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD08458917
    Molecular Formula:
    C10H18F6N2O4S2
    Molecular Weight:
    408.37
    Specification Sheet SDS

  • 1-(Tetrahydro-2H-pyran-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

    Purity:
    ≥ 98% (GC)
    Synonym:
    1-(Tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-boronic acid pinacol ester
    Catalog Number:
    39968
    CAS Number:
    1040377-03-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD12033229
    Molecular Formula:
    C14H23BN2O3
    Molecular Weight:
    278.16
    Specification Sheet SDS

  • Tributyl(2-methoxyethyl)phosphonium bis(trifluoromethanesulfonyl)imide

    Purity:
    ≥ 98% (Assay by titration)
    Catalog Number:
    39833
    CAS Number:
    959698-44-3
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD11112190
    Molecular Formula:
    C17H34F6NO5PS2
    Molecular Weight:
    541.55
    Specification Sheet SDS

  • 4-(Bromomethyl)-7-(diethylamino)coumarin

    Purity:
    ≥ 97% (HPLC)
    Catalog Number:
    39725
    CAS Number:
    1256259-14-9
    Purity Limit:
    ≥ 97% (HPLC)
    MDL NO:
    MFCD31618098
    Molecular Formula:
    C14H16BrNO2
    Molecular Weight:
    310.19
    Specification Sheet SDS

  • 1-(2-Nitrophenyl)ethanol

    Purity:
    ≥ 98% (GC)
    Synonym:
    2-Nitro-α-methylbenzyl alcohol
    Catalog Number:
    39721
    CAS Number:
    3205-25-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD02683380
    Molecular Formula:
    C8H9NO3
    Molecular Weight:
    167.16
    Specification Sheet SDS

  • Malonic acid dihydrazide

    Purity:
    ≥ 93% (Assay by titration)
    Synonym:
    Malono-dihydrazide
    Catalog Number:
    39701
    CAS Number:
    3815-86-9
    Purity Limit:
    ≥ 93% (Assay by titration)
    MDL NO:
    MFCD00041268
    Molecular Formula:
    C3H8N4O2
    Molecular Weight:
    132.12
    Specification Sheet SDS

  • 2-(2-Nitrophenyl)propan-1-ol

    Purity:
    ≥ 98% (Assay)
    Catalog Number:
    39722
    CAS Number:
    64987-77-5
    Purity Limit:
    ≥ 98% (Assay)
    MDL NO:
    MFCD09038679
    Molecular Formula:
    C9H11NO3
    Molecular Weight:
    181.19
    Specification Sheet SDS

  • 6-Bromo-7-hydroxy-4-(hydroxymethyl)coumarin

    Purity:
    ≥ 96% (GC)
    Synonym:
    6-Bromo-7-hydroxy-4-(hydroxymethyl)-2H-chromen-2-one
    Catalog Number:
    39724
    CAS Number:
    223420-41-5
    Purity Limit:
    ≥ 96% (GC)
    MDL NO:
    MFCD25961202
    Molecular Formula:
    C10H7BrO4
    Molecular Weight:
    271.07
    Specification Sheet SDS

  • Mono-tert-butyl succinate

    Purity:
    ≥ 99% (GC)
    Synonym:
    Succinic acid mono-tert-butyl ester
    Catalog Number:
    39720
    CAS Number:
    15026-17-2
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00273441
    Molecular Formula:
    C8H14O4
    Molecular Weight:
    174.2
    Specification Sheet SDS

  • 7-(Diethylamino)-4-(hydroxymethyl)coumarin

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    39726
    CAS Number:
    54711-38-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD03424352
    Molecular Formula:
    C14H17NO3
    Molecular Weight:
    247.29
    Specification Sheet SDS

  • Diethylene glycol bis(2-propynyl) ether

    Purity:
    ≥ 98% (GC)
    Synonym:
    3-[2-[2-(2-Propynyloxy)ethoxy]ethoxy]-1-propyne
    Catalog Number:
    39717
    CAS Number:
    126422-57-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD22201523
    Molecular Formula:
    C10H14O3
    Molecular Weight:
    182.22
    Specification Sheet SDS

  • 1,5-Difluoro-2,4-dinitrobenzene

    Hazmat
    Purity:
    ≥ 97% (GC)
    Synonym:
    1,3-Difluoro-4,6-dinitrobenzene
    Hazmat
    Catalog Number:
    39718
    CAS Number:
    327-92-4
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00007052
    Molecular Formula:
    C6H2F2N2O4
    Molecular Weight:
    204.09
    Specification Sheet SDS

  • Dithiodiglycolic acid

    Purity:
    ≥ 99.5% (Assay by titration)
    Synonym:
    Dithiodiacetic acid
    Catalog Number:
    39707
    CAS Number:
    505-73-7
    Purity Limit:
    ≥ 99.5% (Assay by titration)
    MDL NO:
    MFCD00039607
    Molecular Formula:
    C4H6O4S2
    Molecular Weight:
    182.21
    Specification Sheet SDS

  • tert-Butyl hydrogen dodecanedioate

    Purity:
    ≥ 98% (GC)
    Synonym:
    Dodecanedioic acid mono-tert-butyl ester
    Catalog Number:
    39709
    CAS Number:
    234081-98-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD28098251
    Molecular Formula:
    C16H30O4
    Molecular Weight:
    286.41
    Specification Sheet SDS

  • Ethylene glycol 1,2-bis(2-propynyl) ether

    Hazmat
    Purity:
    ≥ 97% (GC)
    Synonym:
    1,2-Bis(2-propynyloxy)ethane
    Hazmat
    Catalog Number:
    39705
    CAS Number:
    40842-04-4
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD03640302
    Molecular Formula:
    C8H10O2
    Molecular Weight:
    138.17
    Specification Sheet SDS

  • 1,14-Diamino-3,6,9,12-tetraoxatetradecane

    Hazmat
    Purity:
    ≥ 97% (GC)
    Synonym:
    3,6,9,12-Tetraoxatetradecane-1,14-diamine
    Hazmat
    Catalog Number:
    39696
    CAS Number:
    68960-97-4
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD01365938
    Molecular Formula:
    C10H24N2O4
    Molecular Weight:
    236.31
    Specification Sheet SDS

  • 5,6,11,12-Tetradehydrodibenzo[a,e]cyclooctene

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    5,6,11,12-Tetradehydrodibenzo[a,e]cyclooctatetraene
    Catalog Number:
    39693
    CAS Number:
    53397-65-2
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD28386121
    Molecular Formula:
    C16H8
    Molecular Weight:
    200.24
    Specification Sheet SDS

  • tert-Butyl hydrogen tetradecanedioate

    Purity:
    ≥ 99% (ELSD)
    Synonym:
    Tetradecanedioic acid mono-tert-butyl ester
    Catalog Number:
    39710
    CAS Number:
    234082-00-9
    Purity Limit:
    ≥ 99% (ELSD)
    MDL NO:
    MFCD23136040
    Molecular Formula:
    C18H34O4
    Molecular Weight:
    314.47
    Specification Sheet SDS

  • Dimethyl suberimidate dihydrochloride

    Purity:
    ≥ 98% (Assay by titration)
    Synonym:
    Suberimidic acid dimethyl ester dihydrochloride
    Catalog Number:
    39702
    CAS Number:
    34490-86-3
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00012574
    Molecular Formula:
    C10H20N2O2·2HCl
    Molecular Weight:
    273.2
    Specification Sheet SDS

  • 3,3'-Dithiodipropionic acid

    Hazmat
    Purity:
    ≥ 97% (NMR)
    Synonym:
    2-Carboxyethyl disulfide
    Hazmat
    Catalog Number:
    39704
    CAS Number:
    1119-62-6
    Purity Limit:
    ≥ 97% (NMR)
    MDL NO:
    MFCD00002780
    Molecular Formula:
    C6H10O4S2
    Molecular Weight:
    210.26
    Specification Sheet SDS

  • Dimethyl adipimidate dihydrochloride

    Purity:
    ≥ 98% (Assay by titration)
    Synonym:
    Adipimidic acid dimethyl ester dihydrochloride
    Catalog Number:
    39697
    CAS Number:
    14620-72-5
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00012573
    Molecular Formula:
    C8H16N2O2·2HCl
    Molecular Weight:
    245.14
    Specification Sheet SDS

  • 4-[3-(Trifluoromethyl)-3H-diazirin-3-yl]benzyl alcohol

    Purity:
    ≥ 97% (HPLC)
    Synonym:
    3-[4-(Hydroxymethyl)phenyl]-3-(trifluoromethyl)-3H-diazirine
    Catalog Number:
    39684
    CAS Number:
    87736-88-7
    Purity Limit:
    ≥ 97% (HPLC)
    MDL NO:
    MFCD19442582
    Molecular Formula:
    C9H7F3N2O
    Molecular Weight:
    216.16
    Specification Sheet SDS

  • Glycidyl propargyl ether

    Hazmat
    Purity:
    ≥ 95% (GC)
    Synonym:
    Glycidyl 2-Propynyl ether
    Hazmat
    Catalog Number:
    39687
    CAS Number:
    18180-30-8
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD00099300
    Molecular Formula:
    C6H8O2
    Molecular Weight:
    112.13
    Specification Sheet SDS

  • Propargylamine

    Hazmat
    Purity:
    ≥ 97.5% (GC)
    Synonym:
    3-Amino-1-propyne
    Hazmat
    Catalog Number:
    39688
    CAS Number:
    2450-71-7
    Purity Limit:
    ≥ 97.5% (GC)
    MDL NO:
    MFCD00008198
    Molecular Formula:
    C3H5N
    Molecular Weight:
    55.08
    Specification Sheet SDS

  • Bis(4-fluoro-3-nitrophenyl) sulfone

    Purity:
    ≥ 98% (GC)
    Synonym:
    4,4'-Difluoro-3,3'-dinitrodiphenyl sulfone
    Catalog Number:
    39689
    CAS Number:
    312-30-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00007057
    Molecular Formula:
    C12H6F2N2O6S
    Molecular Weight:
    344.24
    Specification Sheet SDS
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