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Building Blocks

7868
Sub Categories
Fluorinated Building Blocks 1630
Heterocyclic Building Blocks 3724
Non-Heterocyclic Building Blocks 2573

  • 1-Allylisatin

    Purity:
    ≥ 98% (GC)
    Synonym:
    1-Allylindole-2,3-dione
    Catalog Number:
    43206
    CAS Number:
    830-74-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00224218
    Molecular Formula:
    C11H9NO2
    Molecular Weight:
    187.2
    Specification Sheet SDS

  • 2-Acetylphenothiazine

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43200
    CAS Number:
    6631-94-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00005017
    Molecular Formula:
    C14H11NOS
    Molecular Weight:
    241.31
    Specification Sheet SDS

  • 4,5-Bis(benzoylthio)-1,3-dithiole-2-thione

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    43197
    CAS Number:
    68494-08-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00059894
    Molecular Formula:
    C17H10O2S5
    Molecular Weight:
    406.57
    Specification Sheet SDS

  • 2,5-Dihydroxy-1,4-dithiane

    Purity:
    ≥ 98% (GC)
    Synonym:
    1,4-Dithiane-2,5-diol
    Catalog Number:
    43193
    CAS Number:
    40018-26-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00006659
    Molecular Formula:
    C4H8O2S2
    Molecular Weight:
    152.23
    Specification Sheet SDS

  • 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-Oxide

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    3,4:5,6-Dibenzo-1,2-oxaphosphane-2-oxide
    Catalog Number:
    43176
    CAS Number:
    35948-25-5
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00040561
    Molecular Formula:
    C12H9O2P
    Molecular Weight:
    216.18
    Specification Sheet SDS

  • Benzo[c]cinnoline

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43192
    CAS Number:
    230-17-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00004990
    Molecular Formula:
    C12H8N2
    Molecular Weight:
    180.21
    Specification Sheet SDS

  • 6,11-Dihydrodibenzo[b,e]thiepin-11-one

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43196
    CAS Number:
    1531-77-7
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD02093738
    Molecular Formula:
    C14H10OS
    Molecular Weight:
    226.29
    Specification Sheet SDS

  • Dimethyl 1,3-dithiole-2-thione-4,5-dicarboxylate

    Purity:
    ≥ 98% (GC)
    Synonym:
    Dimethyl 2-thioxo-1,3-dithiole-4,5-dicarboxylate
    Catalog Number:
    43198
    CAS Number:
    7396-41-0
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00142532
    Molecular Formula:
    C7H6O4S3
    Molecular Weight:
    250.3
    Specification Sheet SDS

  • Trimethylolpropane tris[3-(aziridin-1-yl)propionate]

    Purity:
    ≥ 90%
    Synonym:
    2,2-Bis[3-(aziridin-1-yl)propanoyloxymethyl]butyl 3-(aziridin-1-yl)propanoate
    Catalog Number:
    43194
    CAS Number:
    52234-82-9
    Purity Limit:
    ≥ 90%
    MDL NO:
    MFCD04038063
    Molecular Formula:
    C21H35N3O6
    Molecular Weight:
    425.53
    Specification Sheet SDS

  • Bis(carbonyldithio)tetrathiafulvalene

    Purity:
    ≥ 95%
    Synonym:
    2,2'-Bis(1,3,4,6-tetrathiapentalene-5-one)
    Catalog Number:
    43189
    CAS Number:
    64394-47-4
    Purity Limit:
    ≥ 95%
    MDL NO:
    MFCD00059965
    Molecular Formula:
    C8O2S8
    Molecular Weight:
    384.57
    Specification Sheet SDS

  • 1,3-Dihydroxyacetone dimer

    Purity:
    ≥ 96% (Assay by titration)
    Synonym:
    2,5-Dihydroxy-1,4-dioxane-2,5-dimethanol
    Catalog Number:
    43182
    CAS Number:
    26776-70-5
    Purity Limit:
    ≥ 96% (Assay by titration)
    MDL NO:
    MFCD00051019
    Molecular Formula:
    C6H12O6
    Molecular Weight:
    180.16
    Specification Sheet SDS

  • 2,4-Butanesultone

    Purity:
    ≥ 98% (GC)
    Synonym:
    3-Methyl-1,2-oxathiolane 2,2-dioxide
    Catalog Number:
    43179
    CAS Number:
    1121-03-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD01941639
    Molecular Formula:
    C4H8O3S
    Molecular Weight:
    136.17
    Specification Sheet SDS

  • 2,1,3-Benzoxadiazole

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43186
    CAS Number:
    273-09-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00068064
    Molecular Formula:
    C6H4N2O
    Molecular Weight:
    120.11
    Specification Sheet SDS

  • 4,5-Ethylenedithio-1,3-dithiol-2-one

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43190
    CAS Number:
    74962-29-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00137883
    Molecular Formula:
    C5H4OS4
    Molecular Weight:
    208.33
    Specification Sheet SDS

  • 4,5-Ethylenedithio-1,3-dithiole-2-thione

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43187
    CAS Number:
    59089-89-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00137882
    Molecular Formula:
    C5H4S5
    Molecular Weight:
    224.39
    Specification Sheet SDS

  • 1,3-Dithiane

    Purity:
    ≥ 97% (GC)
    Catalog Number:
    43191
    CAS Number:
    505-23-7
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00006654
    Molecular Formula:
    C4H8S2
    Molecular Weight:
    120.23
    Specification Sheet SDS

  • 4,4-Dioxo-1,4-oxathiane

    Purity:
    ≥ 98% (GC)
    Synonym:
    1,4-Oxathiane 4,4-dioxide
    Catalog Number:
    43178
    CAS Number:
    107-61-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00011683
    Molecular Formula:
    C4H8O3S
    Molecular Weight:
    136.17
    Specification Sheet SDS

  • 4,5-Bis(methylthio)-1,3-dithiol-2-one

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43177
    CAS Number:
    61485-46-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00137889
    Molecular Formula:
    C5H6OS4
    Molecular Weight:
    210.34
    Specification Sheet SDS

  • 5,10-Dihydro-5,10-dimethylphenazine

    Purity:
    ≥ 99% (GC)
    Catalog Number:
    43188
    CAS Number:
    15546-75-5
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00092904
    Molecular Formula:
    C14H14N2
    Molecular Weight:
    210.28
    Specification Sheet SDS

  • 3,9-Bis(2-cyanoethyl)-2,4,8,10-tetraoxaspiro[5.5]undecane

    Purity:
    ≥ 98% (GC)
    Synonym:
    CTU
    Catalog Number:
    43174
    CAS Number:
    3058-04-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00191394
    Molecular Formula:
    C13H18N2O4
    Molecular Weight:
    266.3
    Specification Sheet SDS

  • 3-Benzoylthiazolidine-2-thione

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43185
    CAS Number:
    70326-37-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00457448
    Molecular Formula:
    C10H9NOS2
    Molecular Weight:
    223.31
    Specification Sheet SDS

  • 4,5-Bis(methylthio)-1,3-dithiole-2-thione

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43181
    CAS Number:
    49638-64-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00137888
    Molecular Formula:
    C5H6S5
    Molecular Weight:
    226.4
    Specification Sheet SDS

  • 1,4-Butanesultam

    Purity:
    ≥ 98% (GC)
    Synonym:
    1,2-Thiazinane 1,1-dioxide
    Catalog Number:
    43180
    CAS Number:
    37441-50-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD04038916
    Molecular Formula:
    C4H9NO2S
    Molecular Weight:
    135.18
    Specification Sheet SDS

  • 2-Butylbenzo[d]isothiazol-3(2H-one

    Hazmat
    Purity:
    ≥ 95% (GC)
    Hazmat
    Catalog Number:
    43183
    CAS Number:
    4299-07-4
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD09751282
    Molecular Formula:
    C11H13NOS
    Molecular Weight:
    207.29
    Specification Sheet SDS

  • 2-(tert-Butoxycarbonyl)-2-azabicyclo[2.2.1]hept-5-ene

    Purity:
    ≥ 95% (GC)
    Synonym:
    2-Boc-2-azabicyclo[2.2.1]hept-5-ene
    Catalog Number:
    43184
    CAS Number:
    188345-71-3
    Purity Limit:
    ≥ 95% (GC)
    MDL NO:
    MFCD22416354
    Molecular Formula:
    C11H17NO2
    Molecular Weight:
    195.26
    Specification Sheet SDS

  • Imidazo[1,2-a]pyrimidine

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43173
    CAS Number:
    274-95-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD06245377
    Molecular Formula:
    C6H5N3
    Molecular Weight:
    119.13
    Specification Sheet SDS

  • Phenanthridine

    Purity:
    ≥ 98% (GC)
    Synonym:
    3,4-Benzoquinoline
    Catalog Number:
    43168
    CAS Number:
    229-87-8
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00004989
    Molecular Formula:
    C13H9N
    Molecular Weight:
    179.22
    Specification Sheet SDS

  • 4-Aminopyrazolo[3,4-d]pyrimidine

    Hazmat
    Purity:
    ≥ 97% (HPLC)
    Synonym:
    1H-Pyrazolo[3,4-d]pyrimidin-4-amine
    Hazmat
    Catalog Number:
    43171
    CAS Number:
    2380-63-4
    Purity Limit:
    ≥ 97% (HPLC)
    MDL NO:
    MFCD00005688
    Molecular Formula:
    C5H5N5
    Molecular Weight:
    135.13
    Specification Sheet SDS

  • Isoxazolidine hydrochloride

    Purity:
    ≥ 97% (Assay by titration)
    Catalog Number:
    43172
    CAS Number:
    39657-45-9
    Purity Limit:
    ≥ 97% (Assay by titration)
    MDL NO:
    MFCD11100465
    Molecular Formula:
    C3H7NO·HCl
    Molecular Weight:
    109.55
    Specification Sheet SDS

  • 4,5-Bis(2-cyanoethylthio)-1,3-dithiole-2-thione

    Hazmat
    Purity:
    ≥ 98% (HPLC)
    Hazmat
    Catalog Number:
    43175
    CAS Number:
    132765-35-6
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD01096160
    Molecular Formula:
    C9H8N2S5
    Molecular Weight:
    304.48
    Specification Sheet SDS

  • 2,2-Dimethyl-1,3-benzodioxole

    Purity:
    ≥ 98% (GC)
    Synonym:
    1,2-(Isopropylidenedioxy)benzene
    Catalog Number:
    43170
    CAS Number:
    14005-14-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD08061594
    Molecular Formula:
    C9H10O2
    Molecular Weight:
    150.18
    Specification Sheet SDS

  • 6(5H-Phenanthridinone

    Purity:
    ≥ 98% (HPLC)
    Catalog Number:
    43166
    CAS Number:
    1015-89-0
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00004988
    Molecular Formula:
    C13H9NO
    Molecular Weight:
    195.22
    Specification Sheet SDS

  • 9-Julolidinecarboxaldehyde

    Purity:
    ≥ 98% (GC)
    Synonym:
    2,3,6,7-Tetrahydro-1H,5H-benzo[ij]quinolizine-9-carboxaldehyde
    Catalog Number:
    43165
    CAS Number:
    33985-71-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00151555
    Molecular Formula:
    C13H15NO
    Molecular Weight:
    201.27
    Specification Sheet SDS

  • 4,5-Bis(2-cyanoethylthio)-1,3-dithiol-2-one

    Hazmat
    Purity:
    ≥ 98% (HPLC)
    Hazmat
    Catalog Number:
    43169
    CAS Number:
    158871-28-4
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD01142888
    Molecular Formula:
    C9H8N2OS4
    Molecular Weight:
    288.42
    Specification Sheet SDS

  • Piperonylamine

    Purity:
    ≥ 97% (GC)
    Synonym:
    5-(Aminomethyl)-1,3-benzodioxole
    Catalog Number:
    43146
    CAS Number:
    2620-50-0
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00005840
    Molecular Formula:
    C8H9NO2
    Molecular Weight:
    151.17
    Specification Sheet SDS

  • 4,5-Methylenedithio-1,3-dithiol-2-one

    Purity:
    ≥ 95% (HPLC)
    Catalog Number:
    43162
    CAS Number:
    85720-62-3
    Purity Limit:
    ≥ 95% (HPLC)
    MDL NO:
    MFCD00137885
    Molecular Formula:
    C4H2OS4
    Molecular Weight:
    194.3
    Specification Sheet SDS

  • 7-Hydroxy-5-methyl-2-methylthio-[1,2,4]triazolo[1,5-a]pyrimidine

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    4-Hydroxy-6-methyl-2-methylmercapto-1,3,3a,7-tetraazaindene
    Catalog Number:
    43155
    CAS Number:
    40775-78-8
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00186154
    Molecular Formula:
    C7H8N4OS
    Molecular Weight:
    196.23
    Specification Sheet SDS

  • 2-Phenyl-1,3-dithiane

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43167
    CAS Number:
    5425-44-5
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00006656
    Molecular Formula:
    C10H12S2
    Molecular Weight:
    196.33
    Specification Sheet SDS

  • 1-Phenyl-3-(2,4,6-trimethylphenyl)-2-pyrazoline

    Purity:
    ≥ 98% (GC)
    Synonym:
    3-Mesityl-1-phenyl-2-pyrazoline
    Catalog Number:
    43159
    CAS Number:
    60078-97-9
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00153039
    Molecular Formula:
    C18H20N2
    Molecular Weight:
    264.37
    Specification Sheet SDS

  • Phthalimidoacetaldehyde

    Purity:
    ≥ 98%
    Synonym:
    N-(Formylmethyl)phthalimide
    Catalog Number:
    43164
    CAS Number:
    2913-97-5
    Purity Limit:
    ≥ 98%
    MDL NO:
    MFCD00023080
    Molecular Formula:
    C10H7NO3
    Molecular Weight:
    189.17
    Specification Sheet SDS

  • 4-Oxothiane

    Purity:
    ≥ 98% (GC)
    Synonym:
    Tetrahydrothiopyran-4-one
    Catalog Number:
    43161
    CAS Number:
    1072-72-6
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00006660
    Molecular Formula:
    C5H8OS
    Molecular Weight:
    116.18
    Specification Sheet SDS

  • Thianthrene

    Purity:
    ≥ 98% (GC)
    Catalog Number:
    43143
    CAS Number:
    92-85-3
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00005065
    Molecular Formula:
    C12H8S2
    Molecular Weight:
    216.32
    Specification Sheet SDS

  • Xanthane hydride

    Purity:
    ≥ 97% (Assay)
    Catalog Number:
    43157
    CAS Number:
    6846-35-1
    Purity Limit:
    ≥ 97% (Assay)
    MDL NO:
    MFCD00051660
    Molecular Formula:
    C2H2N2S3
    Molecular Weight:
    150.23
    Specification Sheet SDS

  • 3,4-Methylenedioxynitrobenzene

    Purity:
    ≥ 98% (GC)
    Synonym:
    5-Nitro-1,3-benzodioxole
    Catalog Number:
    43160
    CAS Number:
    2620-44-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00005824
    Molecular Formula:
    C7H5NO4
    Molecular Weight:
    167.12
    Specification Sheet SDS

  • 1,8-Naphthosultone

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    8-Hydroxynaphthalene-1-sulfonic acid sultone
    Catalog Number:
    43153
    CAS Number:
    83-31-8
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00005937
    Molecular Formula:
    C10H6O3S
    Molecular Weight:
    206.22
    Specification Sheet SDS

  • 4-Aminotetrahydro-2H-thiopyran 1,1-dioxide hydrochloride

    Purity:
    ≥ 98% (Assay by titration)
    Synonym:
    (1,1-Dioxidotetrahydro-2H-thiopyran-4-yl)amine hydrochloride
    Catalog Number:
    43158
    CAS Number:
    116529-31-8
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD11114559
    Molecular Formula:
    C5H11NO2S·HCl
    Molecular Weight:
    185.67
    Specification Sheet SDS

  • 6-Methyl-2H-pyrido[1,2-a]pyrimidin-2-one

    Purity:
    ≥ 98% (Assay by titration)
    Catalog Number:
    43149
    CAS Number:
    16075-68-6
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00191466
    Molecular Formula:
    C9H8N2O
    Molecular Weight:
    160.18
    Specification Sheet SDS

  • 1,8-Naphthyridine

    Purity:
    ≥ 98% (GC)
    Synonym:
    1,8-Diazanaphthalene
    Catalog Number:
    43140
    CAS Number:
    254-60-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00059751
    Molecular Formula:
    C8H6N2
    Molecular Weight:
    130.15
    Specification Sheet SDS

  • 1,4-Butanesultone

    Purity:
    ≥ 99% (GC)
    Synonym:
    1,2-Oxathiane 2,2-dioxide
    Catalog Number:
    43147
    CAS Number:
    1633-83-6
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00006584
    Molecular Formula:
    C4H8O3S
    Molecular Weight:
    136.17
    Specification Sheet SDS

  • Xanthene-9-carboxylic acid

    Purity:
    ≥ 98% (Assay by titration)
    Catalog Number:
    43154
    CAS Number:
    82-07-5
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00005059
    Molecular Formula:
    C14H10O3
    Molecular Weight:
    226.23
    Specification Sheet SDS
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