💛 99% Happy customers

📦 Same-day shipping on in-stock items

Heterocyclic Building Blocks

3724

  • Catalog Number:
    37168
    CAS Number:
    24194-61-4
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00010048
    Molecular Formula:
    C10H20S4
    Molecular Weight:
    268.51
  • 4-Amino-4H-1,2,4-triazole

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    4H-1,2,4-Triazol-4-amine
    Catalog Number:
    37118
    CAS Number:
    584-13-4
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00003099
    Molecular Formula:
    C2H4N4
    Molecular Weight:
    84.08
  • 1-Ethylpyrrolidine

    Hazmat
    Purity:
    ≥ 99% (GC)
    Hazmat
    Catalog Number:
    37085
    CAS Number:
    7335-06-0
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD01632186
    Molecular Formula:
    C6H13N
    Molecular Weight:
    99.18
  • 1-Acetyl-4-(4-hydroxyphenyl)piperazine

    Purity:
    ≥ 99% (Assay by titration, HPLC)
    Synonym:
    4-(4-Acetyl-1-piperazinyl)phenol
    Catalog Number:
    36939
    CAS Number:
    67914-60-7
    Purity Limit:
    ≥ 99% (Assay by titration, HPLC)
    MDL NO:
    MFCD00044905
    Molecular Formula:
    C12H16N2O2
    Molecular Weight:
    220.27
  • 3-Amino-1H-pyrazole-4-carboxamide hemisulfate

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    3-Amino-4-carbamoylpyrazole hemisulfate
    Catalog Number:
    36942
    CAS Number:
    27511-79-1
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00013093
    Molecular Formula:
    C4H6N4O·0.5H2SO4
    Molecular Weight:
    175.16
  • Catalog Number:
    36940
    CAS Number:
    52605-52-4
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00067039
    Molecular Formula:
    C13H18Cl2N2·HCl
    Molecular Weight:
    309.66
  • 1,2-Benzenedisulfonic imide

    Purity:
    ≥ 98% (Assay by titration, HPLC)
    Synonym:
    o-Benzenedisulfonimide
    Catalog Number:
    36886
    CAS Number:
    4482-01-3
    Purity Limit:
    ≥ 98% (Assay by titration, HPLC)
    MDL NO:
    MFCD07779379
    Molecular Formula:
    C6H5NO4S2
    Molecular Weight:
    219.23
  • Ethylene carbonate

    Purity:
    ≥ 98% (GC)
    Synonym:
    1,3-Dioxolan-2-one
    Catalog Number:
    36455
    CAS Number:
    96-49-1
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00005382
    Molecular Formula:
    C3H4O3
    Molecular Weight:
    88.06
  • Cyanuric chloride

    Hazmat
    Purity:
    ≥ 98% (HPLC)
    Synonym:
    2,4,6-Trichloro-1,3,5-triazine
    Hazmat
    Catalog Number:
    36404
    CAS Number:
    108-77-0
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00006046
    Molecular Formula:
    C3Cl3N3
    Molecular Weight:
    184.41
  • 3-Ethyl-5-(2-hydroxyethyl)-4-methylthiazolium bromide

    Purity:
    ≥ 98% (Assay by titration)
    Catalog Number:
    36177
    CAS Number:
    54016-70-5
    Purity Limit:
    ≥ 98% (Assay by titration)
    MDL NO:
    MFCD00040549
    Molecular Formula:
    C8H14BrNoS
    Molecular Weight:
    252.17
  • 1-(Chloromethyl)-1H-benzotriazole

    Hazmat
    Purity:
    ≥ 97% (GC)
    Synonym:
    1-(Chloromethyl)benzotriazole
    Hazmat
    Catalog Number:
    36073
    CAS Number:
    54187-96-1
    Purity Limit:
    ≥ 97% (GC)
    MDL NO:
    MFCD00216649
    Molecular Formula:
    C7H6ClN3
    Molecular Weight:
    167.6
  • 1H-Benzotriazol-1-ylmethyl isocyanide

    Hazmat
    Purity:
    ≥ 97%
    Synonym:
    1-(Isocyanomethyl)-1H-benzotriazole
    Hazmat
    Catalog Number:
    36100
    CAS Number:
    87022-42-2
    Purity Limit:
    ≥ 97%
    MDL NO:
    MFCD00961633
    Molecular Formula:
    C8H6N4
    Molecular Weight:
    158.16
  • 1H-Benzotriazole-1-methanol

    Purity:
    ≥ 98.5% (HPLC)
    Synonym:
    1-(Hydroxymethyl)benzotriazole
    Catalog Number:
    36102
    CAS Number:
    28539-02-8
    Purity Limit:
    ≥ 98.5% (HPLC)
    MDL NO:
    MFCD00179118
    Molecular Formula:
    C7H7N3O
    Molecular Weight:
    149.15
  • 2,4-Dichlorothiazole

    Purity:
    ≥ 98% (GC)
    Synonym:
    2,4-Dichloro-1,3-thiazole
    Catalog Number:
    35183
    CAS Number:
    4175-76-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD08691358
    Molecular Formula:
    C3HCl2NS
    Molecular Weight:
    154.02
  • 2-Methyl-3-(3,4-methylenedioxyphenyl)-propanal

    Grade:
    FEMA 4599
    Purity:
    96 - 100% (GC)
    Synonym:
    2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde
    Catalog Number:
    35002
    Grade:
    FEMA 4599
    CAS Number:
    1205-17-0
    Purity Limit:
    96 - 100% (GC)
    MDL NO:
    MFCD00067053
    Molecular Formula:
    C11H12O3
    Molecular Weight:
    192.21
  • 2,3,5-Trimethylpyrazine

    Hazmat
    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    Purity:
    99 - 100% (GC)
    Synonym:
    Potato pyrazine
    Hazmat
    Catalog Number:
    35000
    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    CAS Number:
    14667-55-1
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006145
    Molecular Formula:
    C7H10N2
    Molecular Weight:
    122.17
  • 2,3,5-Trimethylpyrazine

    Hazmat
    Grade:
    KOSHER, FEMA 3244
    Purity:
    99 - 100% (GC)
    Synonym:
    Potato pyrazine
    Hazmat
    Catalog Number:
    34999
    Grade:
    KOSHER, FEMA 3244
    CAS Number:
    14667-55-1
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006145
    Molecular Formula:
    C7H10N2
    Molecular Weight:
    122.17
  • 2,3,5,6-Tetramethylpyrazine

    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    Purity:
    99 - 100% (GC)
    Synonym:
    Tetramethyl-2,3,5,6 pyrazine
    Catalog Number:
    34982
    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    CAS Number:
    1124-11-4
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006146
    Molecular Formula:
    C8H12N2
    Molecular Weight:
    136.19
  • 5,6,7,8-Tetrahydroquinoxaline

    Grade:
    meets FG specifications, KOSHER, FEMA 3321
    Purity:
    98 - 100% (GC)
    Synonym:
    Tetrahydroquinoxaline
    Catalog Number:
    34980
    Grade:
    meets FG specifications, KOSHER, FEMA 3321
    CAS Number:
    34413-35-9
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD00038078
    Molecular Formula:
    C8H10N2
    Molecular Weight:
    134.18
  • Galaxolide

    Hazmat
    Purity:
    ≥ 74% (GC)
    Synonym:
    1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[g]-2-benzopyran
    Hazmat
    Catalog Number:
    34676
    CAS Number:
    1222-05-5
    Purity Limit:
    ≥ 74% (GC)
    MDL NO:
    MFCD00217003
    Molecular Formula:
    C18H26O
    Molecular Weight:
    258.4
  • 2-Methyl-3-tetrahydrofuranthiol, mixture of cis and trans

    Hazmat
    Grade:
    KOSHER, FEMA 3787
    Purity:
    98 - 100% (GC)
    Synonym:
    2-Methyltetrahydrofuran-3-thiol, mixture of cis and trans
    Hazmat
    Catalog Number:
    34651
    Grade:
    KOSHER, FEMA 3787
    CAS Number:
    57124-87-5
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD01632596
    Molecular Formula:
    C5H10OS
    Molecular Weight:
    118.2
  • 2-(4-Methyl-5-thiazolyl)ethyl acetate

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3205
    Purity:
    98 - 100% (GC)
    Synonym:
    4-Methyl-5-thiazoleethanol acetate
    Hazmat
    Catalog Number:
    34935
    Grade:
    meets FG specifications, KOSHER, FEMA 3205
    CAS Number:
    656-53-1
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD00005338
    Molecular Formula:
    C8H11NO2S
    Molecular Weight:
    185.24
  • 5-Methylfurfural

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 2702
    Purity:
    99 - 100% (GC)
    Synonym:
    5-Methyl-2-furaldehyde
    Hazmat
    Catalog Number:
    34664
    Grade:
    meets FG specifications, KOSHER, FEMA 2702
    CAS Number:
    620-02-0
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00003232
    Molecular Formula:
    C6H6O2
    Molecular Weight:
    150.22
  • 2-Methyltetrahydrothiophen-3-one

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3512
    Purity:
    98 - 100% (Purity by GC)
    Synonym:
    2-Methyl-3-tetrahydrothiophenone
    Hazmat
    Catalog Number:
    34658
    Grade:
    meets FG specifications, KOSHER, FEMA 3512
    CAS Number:
    13679-85-1
    Purity Limit:
    98 - 100% (Purity by GC)
    MDL NO:
    MFCD00078280
    Molecular Formula:
    C5H8OS
    Molecular Weight:
    116.18
  • 4-Methyl-5-thiazoleethanol (Milky)

    Grade:
    meets FG specifications, KOSHER, FEMA 3204
    Purity:
    99 - 100% (GC)
    Synonym:
    5-(2-Hydroxyethyl)-4-methylthiazole
    Catalog Number:
    34934
    Grade:
    meets FG specifications, KOSHER, FEMA 3204
    CAS Number:
    137-00-8
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00005339
    Molecular Formula:
    C6H9NOS
    Molecular Weight:
    143.21
  • 4-Methyl-5-thiazoleethanol (Bean)

    Grade:
    meets FG specifications, KOSHER, FEMA 3204
    Purity:
    99 - 100% (GC)
    Synonym:
    5-(2-Hydroxyethyl)-4-methylthiazole
    Catalog Number:
    34933
    Grade:
    meets FG specifications, KOSHER, FEMA 3204
    CAS Number:
    137-00-8
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00005339
    Molecular Formula:
    C6H9NOS
    Molecular Weight:
    143.21
  • 2-Methoxypyrazine

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3302
    Purity:
    99 - 100% (Purity by GC)
    Hazmat
    Catalog Number:
    34593
    Grade:
    meets FG specifications, KOSHER, FEMA 3302
    CAS Number:
    3149-28-8
    Purity Limit:
    99 - 100% (Purity by GC)
    MDL NO:
    MFCD00006126
    Molecular Formula:
    C5H6N2O
    Molecular Weight:
    110.12
  • Strawberry furanone 25% in PG

    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    Purity:
    98 - 100% (GC)
    Synonym:
    Furaneol
    Catalog Number:
    34922
    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    CAS Number:
    3658-77-3
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD00010706
    Molecular Formula:
    C6H8O3
    Molecular Weight:
    128.13
  • 4-Acetoxy-2,5-dimethyl-3(2H)furanone

    Grade:
    meets FG specifications, KOSHER, FEMA 3797
    Purity:
    98 - 100% (GC)
    Synonym:
    Acetic acid 4,5-dihydro-2,5-dimethyl-4-oxofuran-3-yl ester
    Catalog Number:
    34921
    Grade:
    meets FG specifications, KOSHER, FEMA 3797
    CAS Number:
    4166-20-5
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD00799462
    Molecular Formula:
    C8H10O4
    Molecular Weight:
    170.16
  • Strawberry furanone 25% in PG

    Grade:
    FG, KOSHER
    Purity:
    23 - 29% (GC)
    Synonym:
    Furaneol
    Catalog Number:
    34920
    Grade:
    FG, KOSHER
    CAS Number:
    3658-77-3
    Purity Limit:
    23 - 29% (GC)
    Molecular Formula:
    C6H8O3
    Molecular Weight:
    128.13
  • Maltol

    Grade:
    Natural, meets FG specifications, Kosher, FEMA 2
    Purity:
    99 - 100% (GC)
    Synonym:
    3-Hydroxy-2-methyl-4-pyrone
    Catalog Number:
    34559
    Grade:
    Natural, meets FG specifications, Kosher, FEMA 2
    CAS Number:
    118-71-8
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006578
    Molecular Formula:
    C6H6O3
    Molecular Weight:
    126.11
  • 6-Isopropylquinoline

    Hazmat
    Purity:
    95 - 100% (GC)
    Synonym:
    6-(Propan-2-yl)quinoline
    Hazmat
    Catalog Number:
    34453
    CAS Number:
    135-79-5
    Purity Limit:
    95 - 100% (GC)
    MDL NO:
    MFCD00047615
    Molecular Formula:
    C12H13N
    Molecular Weight:
    171.24
  • 2-Isobutyl-3-methoxypyrazine

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3132
    Purity:
    99 - 100% (GC)
    Hazmat
    Catalog Number:
    34438
    Grade:
    meets FG specifications, KOSHER, FEMA 3132
    CAS Number:
    24683-00-9
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006128
    Molecular Formula:
    C9H14N2O
    Molecular Weight:
    166.22
  • 2-Isopropyl-4-methylthiazole

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3555
    Purity:
    99 - 100% (GC)
    Hazmat
    Catalog Number:
    34454
    Grade:
    meets FG specifications, KOSHER, FEMA 3555
    CAS Number:
    15679-13-7
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00036561
    Molecular Formula:
    C7H11NS
    Molecular Weight:
    141.23
  • 2-Isobutylthiazole

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3134
    Purity:
    98 - 100% (GC)
    Hazmat
    Catalog Number:
    34439
    Grade:
    meets FG specifications, KOSHER, FEMA 3134
    CAS Number:
    18640-74-9
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD00005334
    Molecular Formula:
    C7H11NS
    Molecular Weight:
    141.23
  • 2-Methylpyrazine

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3309
    Purity:
    98 - 100% (Purity by GC)
    Hazmat
    Catalog Number:
    34657
    Grade:
    meets FG specifications, KOSHER, FEMA 3309
    CAS Number:
    109-08-0
    Purity Limit:
    98 - 100% (Purity by GC)
    MDL NO:
    MFCD00006142
    Molecular Formula:
    C5H6N2
    Molecular Weight:
    94.11
  • Furfuryl thioacetate

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3162
    Synonym:
    Thioacetic acid S-furfuryl ester
    Hazmat
    Catalog Number:
    34256
    Grade:
    meets FG specifications, KOSHER, FEMA 3162
    CAS Number:
    13678-68-7
    MDL NO:
    MFCD00010083
    Molecular Formula:
    C7H8O2S
    Molecular Weight:
    156.2
  • 2-Ethyl-4-methylthiazole

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3680
    Purity:
    98 - 100% (GC)
    Hazmat
    Catalog Number:
    34205
    Grade:
    meets FG specifications, KOSHER, FEMA 3680
    CAS Number:
    15679-12-6
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD00036621
    Molecular Formula:
    C6H9NS
    Molecular Weight:
    127.21
  • 2-Ethylpyrazine

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3281
    Purity:
    99 - 100% (GC)
    Hazmat
    Catalog Number:
    34208
    Grade:
    meets FG specifications, KOSHER, FEMA 3281
    CAS Number:
    13925-00-3
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006149
    Molecular Formula:
    C6H8N2
    Molecular Weight:
    108.14
  • 2-Ethyl-3-methylpyrazine

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3155
    Purity:
    99 - 100% (GC)
    Hazmat
    Catalog Number:
    34204
    Grade:
    meets FG specifications, KOSHER, FEMA 3155
    CAS Number:
    15707-23-0
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006150
    Molecular Formula:
    C7H10N2
    Molecular Weight:
    122.17
  • 4,5-Dimethylthiazole

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3274
    Purity:
    99 - 100% (GC)
    Hazmat
    Catalog Number:
    34123
    Grade:
    meets FG specifications, KOSHER, FEMA 3274
    CAS Number:
    3581-91-7
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00005336
    Molecular Formula:
    C5H7NS
    Molecular Weight:
    113.18
  • 5-Acetyl-2,4-dimethylthiazole

    Grade:
    meets FG specifications, KOSHER, FEMA 3267
    Purity:
    97 - 100% (GC)
    Synonym:
    2,4-Dimethyl-5-acetylthiazole
    Catalog Number:
    34119
    Grade:
    meets FG specifications, KOSHER, FEMA 3267
    CAS Number:
    38205-60-6
    Purity Limit:
    97 - 100% (GC)
    MDL NO:
    MFCD00005331
    Molecular Formula:
    C7H9NOS
    Molecular Weight:
    155.22
  • Dihydrocoumarin

    Grade:
    Natural, meets FG specifications, Kosher, FEMA 2
    Purity:
    98 - 100% (GC)
    Synonym:
    Hydrocoumarin
    Catalog Number:
    34096
    Grade:
    Natural, meets FG specifications, Kosher, FEMA 2
    CAS Number:
    119-84-6
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD00006881
    Molecular Formula:
    C9H8O2
    Molecular Weight:
    148.16
  • 2,3-Dimethylpyrazine

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3271
    Purity:
    99 - 100% (GC)
    Hazmat
    Catalog Number:
    34118
    Grade:
    meets FG specifications, KOSHER, FEMA 3271
    CAS Number:
    5910-89-4
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006144
    Molecular Formula:
    C6H8N2
    Molecular Weight:
    108.14
  • Dihydrocoumarin

    Grade:
    meets FG specifications, KOSHER, FEMA 2381
    Purity:
    99 - 100% (GC)
    Synonym:
    Hydrocoumarin
    Catalog Number:
    34095
    Grade:
    meets FG specifications, KOSHER, FEMA 2381
    CAS Number:
    119-84-6
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006881
    Molecular Formula:
    C9H8O2
    Molecular Weight:
    148.16
  • 2-Methyltetrahydrofuran-3-one

    Hazmat
    Grade:
    meets FG specifications, KOSHER, FEMA 3373
    Purity:
    98 - 100% (GC)
    Synonym:
    4,5-Dihydro-2-methyl-3(2H)-furanone
    Hazmat
    Catalog Number:
    34023
    Grade:
    meets FG specifications, KOSHER, FEMA 3373
    CAS Number:
    3188-00-9
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD00010423
    Molecular Formula:
    C5H8O2
    Molecular Weight:
    100.12
  • 2-Methyltetrahydrofuran-3-one

    Hazmat
    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    Purity:
    99 - 100% (GC)
    Synonym:
    4,5-Dihydro-2-methyl-3(2H)-furanone
    Hazmat
    Catalog Number:
    34024
    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    CAS Number:
    3188-00-9
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00010423
    Molecular Formula:
    C5H8O2
    Molecular Weight:
    100.12
  • 2-Acetylthiazole

    Grade:
    meets FG specifications, Kosher
    Purity:
    98 - 100% (GC)
    Synonym:
    Methyl-2-thiazoyl ketone
    Catalog Number:
    33739
    Grade:
    meets FG specifications, Kosher
    CAS Number:
    24295-03-2
    Purity Limit:
    98 - 100% (GC)
    MDL NO:
    MFCD00005324
    Molecular Formula:
    C5H5NOS
    Molecular Weight:
    127.17
  • 2-Acetylpyrazine

    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    Purity:
    99 - 100% (GC)
    Synonym:
    Acetylpyrazine
    Catalog Number:
    33759
    Grade:
    Natural, meets FG specifications, Kosher, FEMA 3
    CAS Number:
    22047-25-2
    Purity Limit:
    99 - 100% (GC)
    MDL NO:
    MFCD00006134
    Molecular Formula:
    C6H6N2O
    Molecular Weight:
    122.12
  • 5-(Benzylthio)-1H-tetrazole

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    5-[(Phenylmethyl)thio]-1H-tetrazole
    Catalog Number:
    33522
    CAS Number:
    21871-47-6
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00068731
    Molecular Formula:
    C8H8N4S
    Molecular Weight:
    192.24