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Building Blocks

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

  • O-Tritylhydroxylamine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    O-(Triphenylmethyl)hydroxylamine
    Catalog Number:
    31341
    CAS Number:
    31938-11-1
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00042818
    Molecular Formula:
    C19H17NO
    Molecular Weight:
    275.34
    Specification Sheet SDS

  • Triethylene glycol bis(p-toluenesulfonate)

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    2,2'-(Ethylenedioxy)diethyl ditosylate
    Catalog Number:
    31402
    CAS Number:
    19249-03-7
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00048096
    Molecular Formula:
    C20H26O8S2
    Molecular Weight:
    458.55
    Specification Sheet SDS

  • 8-Quinolinesulfonyl chloride

    Hazmat
    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Quinoline-8-sulfonyl chloride
    Hazmat
    Catalog Number:
    31291
    CAS Number:
    18704-37-5
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00006808
    Molecular Formula:
    C9H6ClNO2S
    Molecular Weight:
    227.67
    Specification Sheet SDS

  • N-Boc-N'-methylethylenediamine

    Hazmat
    Purity:
    ≥ 97% (GC)
    Synonym:
    N-(tert-Butoxycarbonyl)-N'-methylethylenediamine
    Hazmat
    Catalog Number:
    31387
    CAS Number:
    122734-32-1
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD06808585
    Molecular Formula:
    C8H18N2O2
    Molecular Weight:
    174.24
    Specification Sheet SDS

  • 1-(Cyclohexylcarbonyl)piperazine

    Purity:
    ≥ 97%(GC)
    Synonym:
    Cyclohexyl-1-piperazinylmethanone
    Catalog Number:
    31347
    CAS Number:
    27561-62-2
    Purity Limit:
    ≥ 97%(GC)
    MDL NO:
    MFCD06798113
    Molecular Formula:
    C11H20N2O
    Molecular Weight:
    196.3
    SDS

  • 2-Oxazolidinone

    Purity:
    ≥ 99% (GC)
    Synonym:
    2-Oxazolidone
    Catalog Number:
    31325
    CAS Number:
    497-25-6
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00005268
    Molecular Formula:
    C3H5NO2
    Molecular Weight:
    87.08
    Specification Sheet SDS

  • 2,4,6-Tri-tert-butylaniline

    Purity:
    ≥ 99% (HPLC)
    Catalog Number:
    31301
    CAS Number:
    961-38-6
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00011645
    Molecular Formula:
    C18H31N
    Molecular Weight:
    261.45
    Specification Sheet SDS

  • tert-Butyl phenyl carbonate

    Purity:
    ≥ 98% (GC)
    Synonym:
    Carbonic acid tert-butyl phenyl ester
    Catalog Number:
    31286
    CAS Number:
    6627-89-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00008804
    Molecular Formula:
    C11H14O3
    Molecular Weight:
    194.23
    Specification Sheet SDS

  • O-(Tetrahydropyran-2-yl)hydroxylamine

    Purity:
    ≥ 99% (GC)
    Synonym:
    O-(Tetrahydro-2H-pyran-2-yl)hydroxylamine
    Catalog Number:
    31337
    CAS Number:
    6723-30-4
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD01321374
    Molecular Formula:
    C5H11NO2
    Molecular Weight:
    117.15
    Specification Sheet SDS

  • Isopropylhydrazine Hydrochloride

    Hazmat
    Purity:
    ≥ 98%(Titration)
    Hazmat
    Catalog Number:
    31308
    CAS Number:
    16726-41-3
    Purity Limit:
    ≥ 98%(Titration)
    MDL NO:
    MFCD01746887
    Molecular Formula:
    C3H10N2·HCl
    Molecular Weight:
    110.59
    Specification Sheet SDS

  • N-(Carbobenzoxy)-1H-pyrazole-1-carboxamidine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Z-1H-pyrazole-1-carboxamidine
    Catalog Number:
    31242
    CAS Number:
    152120-62-2
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00274657
    Molecular Formula:
    C12H12N4O2
    Molecular Weight:
    244.08
    Specification Sheet SDS

  • 2-(Trifluoromethyl)phenylhydrazine hydrochloride

    Purity:
    ≥ 99% (HPLC)
    Catalog Number:
    31246
    CAS Number:
    3107-34-4
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00102619
    Molecular Formula:
    C7H7F3N2·HCl
    Molecular Weight:
    212.6
    Specification Sheet SDS

  • 4-Nitrobenzamidine hydrochloride

    Purity:
    ≥ 98%(HPLC)
    Synonym:
    4-Nitrobenzene-1-carboximidamide hydrochloride
    Catalog Number:
    31281
    CAS Number:
    15723-90-7
    Purity Limit:
    ≥ 98%(HPLC)
    MDL NO:
    MFCD00278833
    Molecular Formula:
    C7H7N3O2·HCl
    Molecular Weight:
    201.61
    SDS

  • 4-(Chloromethyl)benzonitrile

    Hazmat
    Purity:
    ≥ 98% (HPLC)
    Synonym:
    a-Chloro-p-tolunitrile
    Hazmat
    Catalog Number:
    31253
    CAS Number:
    874-86-2
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00019761
    Molecular Formula:
    C8H6ClN
    Molecular Weight:
    151.59
    Specification Sheet SDS

  • 2-Mesitylenesulfonyl hydrazide

    Hazmat
    Purity:
    ≥ 99% (HPLC)
    Synonym:
    2,4,6-Trimethylbenzenesulfonohydrazide
    Hazmat
    Catalog Number:
    31255
    CAS Number:
    16182-15-3
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00007585
    Molecular Formula:
    C9H14N2O2S
    Molecular Weight:
    214.28
    Specification Sheet SDS

  • 4-Fluorophenylhydrazine hydrochloride

    Purity:
    ≥ 97% (NMR)
    Catalog Number:
    31299
    CAS Number:
    823-85-8
    Purity Limit:
    ≥ 97% (NMR)
    MDL NO:
    MFCD00012942
    Molecular Formula:
    C6H7FN2·HCl
    Molecular Weight:
    162.59
    Specification Sheet SDS

  • 6-Chloropyridine-3-carboxaldehyde

    Purity:
    ≥ 98% (NMR)
    Synonym:
    2-Chloro-5-pyridinecarboxaldehyde
    Catalog Number:
    31273
    CAS Number:
    23100-12-1
    Purity Limit:
    ≥ 98% (NMR)
    MDL NO:
    MFCD03095223
    Molecular Formula:
    C6H4ClNO
    Molecular Weight:
    141.56
    Specification Sheet SDS

  • Methyl pentafluorophenyl carbonate

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Pentafluorophenyl methyl carbonate
    Catalog Number:
    31320
    CAS Number:
    36919-03-6
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD01075723
    Molecular Formula:
    C8H3F5O3
    Molecular Weight:
    242.1
    Specification Sheet SDS

  • 1,3,5-Triisopropylbenzene

    Purity:
    ≥ 95% (GC)
    Catalog Number:
    31236
    CAS Number:
    717-74-8
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD00008890
    Molecular Formula:
    C15H24
    Molecular Weight:
    204.35
    Specification Sheet SDS

  • 2,4,6-Triisopropylbenzenesulfonyl hydrazide

    Purity:
    ≥ 99% (Total Nitrogen)
    Synonym:
    2,4,6-Triisopropylbenzenesulfonohydrazide
    Catalog Number:
    31290
    CAS Number:
    39085-59-1
    Purity Limit:
    ≥ 99% (Total Nitrogen)
    MDL NO:
    MFCD00014750
    Molecular Formula:
    C15H26N2O2S
    Molecular Weight:
    298.44
    Specification Sheet SDS

  • 6-Bromo-3-pyridinecarboxaldehyde

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    2-Bromopyridine-5-carboxaldehyde
    Catalog Number:
    31251
    CAS Number:
    149806-06-4
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD04115419
    Molecular Formula:
    C6H4BrNO
    Molecular Weight:
    186.01
    Specification Sheet SDS

  • Ethyl 1,3-dimethyl-1H-pyrazole-5-carboxylate

    Purity:
    ≥ 98%(GC)
    Catalog Number:
    31266
    CAS Number:
    5744-40-1
    Purity Limit:
    ≥ 98%(GC)
    MDL NO:
    MFCD00233452
    Molecular Formula:
    C8H12N2O2
    Molecular Weight:
    168.19
    SDS

  • 5-Bromoisoindolin-1-one

    Purity:
    ≥ 98.5% (HPLC)
    Synonym:
    5-Bromo-2,3-dihydro-1H-isoindol-1-one
    Catalog Number:
    31315
    CAS Number:
    552330-86-6
    Purity Limit:
    ≥ 98.5% (HPLC)
    MDL NO:
    MFCD09701292
    Molecular Formula:
    C8H6BrNO
    Molecular Weight:
    212.05
    Specification Sheet SDS

  • O-tert-Butylhydroxylamine hydrochloride

    Hazmat
    Purity:
    ≥ 99% (Assay by titration)
    Synonym:
    2-Aminooxy-2-methylpropane hydrochloride
    Hazmat
    Catalog Number:
    31330
    CAS Number:
    39684-28-1
    Purity Limit:
    ≥ 99% (Assay by titration)
    MDL NO:
    MFCD00043272
    Molecular Formula:
    C4H11NO·HCl
    Molecular Weight:
    125.6
    Specification Sheet SDS

  • Cyclopropaneamidine hydrochloride

    Purity:
    ≥ 98% (Titration)
    Synonym:
    Cyclopropanecarboxamidine Hydrochloride
    Catalog Number:
    31280
    CAS Number:
    57297-29-7
    Purity Limit:
    ≥ 98% (Titration)
    MDL NO:
    MFCD00053010
    Molecular Formula:
    C4H8N2·HCl
    Molecular Weight:
    120.58
    Specification Sheet SDS

  • N-Boc-imidazole

    Purity:
    ≥ 99% (GC)
    Synonym:
    1-(tert-Butoxycarbonyl)imidazole
    Catalog Number:
    31296
    CAS Number:
    49761-82-2
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00014497
    Molecular Formula:
    C8H12N2O2
    Molecular Weight:
    168.19
    Specification Sheet SDS

  • 1-tert-Butyl 3-ethyl 4-oxopyrrolidine-1,3-dicarboxylate

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Ethyl N-Boc-4-oxopyrrolidine-3-carboxylate
    Catalog Number:
    31314
    CAS Number:
    146256-98-6
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD06656201
    Molecular Formula:
    C12H19NO5
    Molecular Weight:
    257.28
    Specification Sheet SDS

  • 1-Bromo-2,4,6-triisopropylbenzene

    Purity:
    ≥ 98% (GC)
    Synonym:
    2-Bromo-1,3,5-triisopropylbenzene
    Catalog Number:
    31283
    CAS Number:
    21524-34-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00051547
    Molecular Formula:
    C15H23Br
    Molecular Weight:
    283.25
    Specification Sheet SDS

  • 4-Hydroxybenzamidine hydrochloride

    Purity:
    ≥ 99% (HPLC)
    Catalog Number:
    31279
    CAS Number:
    38148-63-9
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00136405
    Molecular Formula:
    C7H8N2O·HCl
    Molecular Weight:
    172.61
    Specification Sheet SDS

  • 1-Bromo-3,5-di-tert-butylbenzene

    Purity:
    ≥ 99% (GC)
    Synonym:
    3,5-Di-tert-butylbromobenzene
    Catalog Number:
    31245
    CAS Number:
    22385-77-9
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00796945
    Molecular Formula:
    C14H21Br
    Molecular Weight:
    269.22
    Specification Sheet SDS

  • N-(Diphenylmethylene)aminoacetonitrile

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    2-[(Diphenylmethylene)amino]acetonitrile
    Catalog Number:
    31241
    CAS Number:
    70591-20-7
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00009970
    Molecular Formula:
    C15H12N2
    Molecular Weight:
    220.27
    Specification Sheet SDS

  • Tripyrrolidinophosphine oxide

    Purity:
    ≥ 98% (GC)
    Synonym:
    Tris(N, N-tetramethylene)phosphoric acid triamide
    Catalog Number:
    31235
    CAS Number:
    6415-07-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00014095
    Molecular Formula:
    C12H24N3OP
    Molecular Weight:
    257.32
    Specification Sheet SDS

  • Chloroformamidine hydrochloride

    Purity:
    ≥ 99% (Assay by titration)
    Synonym:
    Carbamimidic chloride hydrochloride
    Catalog Number:
    31258
    CAS Number:
    29671-92-9
    Purity Limit:
    ≥ 99% (Assay by titration)
    MDL NO:
    MFCD00035527
    Molecular Formula:
    CH3ClN2·HCl
    Molecular Weight:
    114.96
    Specification Sheet SDS

  • N-Benzylhydroxylamine hydrochloride

    Purity:
    ≥ 99% (HPLC)
    Catalog Number:
    31261
    CAS Number:
    29601-98-7
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00043377
    Molecular Formula:
    C7H9NO·HCl
    Molecular Weight:
    159.61
    Specification Sheet SDS

  • Triphenylmethylamine

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Tritylamine
    Catalog Number:
    31252
    CAS Number:
    5824-40-8
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00008047
    Molecular Formula:
    C19H17N
    Molecular Weight:
    259.34
    Specification Sheet SDS

  • Tropolone

    Hazmat
    Purity:
    ≥ 99% (GC)
    Synonym:
    2-Hydroxy-2,4,6-cycloheptatrien-1-one
    Hazmat
    Catalog Number:
    31100
    CAS Number:
    533-75-5
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00004158
    Molecular Formula:
    C7H6O2
    Molecular Weight:
    122.12
    Specification Sheet SDS

  • 2-Amino-1-naphthalenesulfonic acid

    Purity:
    ≥ 99% (Assay)
    Synonym:
    2-Naphthylamine-1-sulfonic acid
    Catalog Number:
    31109
    CAS Number:
    81-16-3
    Purity Limit:
    ≥ 99% (Assay)
    MDL NO:
    MFCD00003988
    Molecular Formula:
    C10H9NO3S
    Molecular Weight:
    223.25
    Specification Sheet SDS

  • Ethyl O-(2-mesitylenesulfonyl)acethydroxamate

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    O-Mesitylsulfonylacetohydroxamic acid ethyl ester
    Catalog Number:
    31260
    CAS Number:
    38202-27-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00009244
    Molecular Formula:
    C13H19NO4S
    Molecular Weight:
    285.4
    Specification Sheet SDS

  • 4-Nitrobenzonitrile

    Hazmat
    Purity:
    ≥ 98% (GC)
    Synonym:
    4-Cyanonitrobenzene
    Hazmat
    Catalog Number:
    31257
    CAS Number:
    619-72-7
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00007279
    Molecular Formula:
    C7H4N2O2
    Molecular Weight:
    148.12
    Specification Sheet SDS

  • mono-Methyl terephthalate

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Methyl hydrogen terephthalate
    Catalog Number:
    31215
    CAS Number:
    1679-64-7
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00002557
    Molecular Formula:
    C9H8O4
    Molecular Weight:
    80.16
    Specification Sheet SDS

  • Di-tert-butyl iminodiacetate

    Purity:
    ≥ 98% (GC)
    Synonym:
    Iminodiacetic acid di-tert-butyl ester
    Catalog Number:
    31306
    CAS Number:
    85916-13-8
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD01863672
    Molecular Formula:
    C12H23NO4
    Molecular Weight:
    245.32
    Specification Sheet SDS

  • N,N-Bis(2-cyanoethyl)formamide

    Hazmat
    Purity:
    ≥ 90%
    Synonym:
    N-Formylimino-3,3'-dipropionitrile
    Hazmat
    Catalog Number:
    31272
    CAS Number:
    3445-84-9
    Purity Limit:
    ≥ 90%
    MDL NO:
    MFCD00040894
    Molecular Formula:
    C7H9N3O
    Molecular Weight:
    151.17
    Specification Sheet SDS

  • 1,3,5-Tri-tert-butylbenzene

    Purity:
    ≥ 99% (GC)
    Catalog Number:
    31237
    CAS Number:
    1460-02-2
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00008831
    Molecular Formula:
    C18H30
    Molecular Weight:
    246.43
    Specification Sheet SDS

  • 2,4-Dichlorophenylacetic acid

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    2-(2,4-Dichlorophenyl)acetic acid
    Catalog Number:
    31182
    CAS Number:
    19719-28-9
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00004318
    Molecular Formula:
    C8H6Cl2O2
    Molecular Weight:
    205.04
    Specification Sheet SDS

  • Diethyl chlorophosphate

    Hazmat
    Purity:
    ≥ 95% (GC)
    Synonym:
    Diethyl phosphorochloridate
    Hazmat
    Catalog Number:
    31244
    CAS Number:
    814-49-3
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD00009075
    Molecular Formula:
    C4H10CIO3P
    Molecular Weight:
    172.54
    Specification Sheet SDS

  • 6-Hydroxy-3-coumaranone

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    6-Hydroxy-2H-benzofuran-3-one
    Catalog Number:
    31269
    CAS Number:
    6272-26-0
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00068174
    Molecular Formula:
    C8H6O3
    Molecular Weight:
    150.13
    Specification Sheet SDS

  • N,O-Bis(tert-butoxycarbonyl)hydroxylamine

    Purity:
    ≥ 98%(GC)
    Synonym:
    N,O-Di-Boc-hydroxylamine
    Catalog Number:
    31274
    CAS Number:
    85006-25-3
    Purity Limit:
    ≥ 98%(GC)
    MDL NO:
    MFCD00034797
    Molecular Formula:
    C10H19NO5
    Molecular Weight:
    233.26
    SDS

  • 2,6-Dichloro-4-(trifluoromethyl)aniline

    Hazmat
    Purity:
    ≥ 99.5% (GC)
    Synonym:
    4-Amino-3,5-dichlorobenzotrifluoride
    Hazmat
    Catalog Number:
    31259
    CAS Number:
    24279-39-8
    Purity Limit:
    ≥ 99.5% (GC)
    MDL NO:
    MFCD00052918
    Molecular Formula:
    C7H4Cl2F3N
    Molecular Weight:
    230.01
    Specification Sheet SDS

  • 2,3-Dichlorobenzoic acid

    Purity:
    ≥ 99% (Assay by titration, HPLC)
    Catalog Number:
    31152
    CAS Number:
    50-45-3
    Purity Limit:
    ≥ 99% (Assay by titration, HPLC)
    MDL NO:
    MFCD00002413
    Molecular Formula:
    C7H4Cl2O2
    Molecular Weight:
    191.01
    Specification Sheet SDS

  • N-Isopropylhydroxylamine hydrochloride

    Purity:
    ≥ 98% (Assay)
    Catalog Number:
    31263
    CAS Number:
    50632-53-6
    Purity Limit:
    ≥ 98% (Assay)
    MDL NO:
    MFCD00012599
    Molecular Formula:
    C3H9NO·HCl
    Molecular Weight:
    111.57
    Specification Sheet SDS
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