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  • Nigrosin

    Grade:
    Certifiable Grade
    Synonym:
    Acid black 2
    Catalog Number:
    42525
    Grade:
    Certifiable Grade
    CAS Number:
    8005-03-6
    MDL NO:
    MFCD00044681
  • Naphthol blue black

    Purity:
    ≥ 50% (Dye content)
    Synonym:
    Acid black 1
    Catalog Number:
    42520
    CAS Number:
    1064-48-8
    Purity Limit:
    ≥ 50% (Dye content)
    MDL NO:
    MFCD00004017
    Molecular Formula:
    C22H14N6Na2O9S2
    Molecular Weight:
    616.49
  • Catalog Number:
    42515
    CAS Number:
    8049-97-6
    MDL NO:
    MFCD00131581
  • Methylene blue

    Grade:
    Certifiable Grade
    Purity:
    ≥ 82% Dye content
    Synonym:
    3,7-bis(Dimethylamino)phenazathionium chloride
    Catalog Number:
    42519
    Grade:
    Certifiable Grade
    CAS Number:
    122965-43-9
    Purity Limit:
    ≥ 82% Dye content
    MDL NO:
    MFCD00150006
    Molecular Formula:
    C16H18ClN3S·xH2O
    Molecular Weight:
    319.85
  • Methyl red sodium salt

    Synonym:
    4-Dimethylaminoazobenzene-2'-carboxylic acid sodium salt
    Catalog Number:
    42518
    CAS Number:
    845-10-3
    MDL NO:
    MFCD00002426
    Molecular Formula:
    C15H14N3NaO2
    Molecular Weight:
    291.28
  • Crocin

    Grade:
    For microscopy
    Synonym:
    Crocetin digentiobiose ester
    Catalog Number:
    42505
    Grade:
    For microscopy
    MDL NO:
    MFCD00017495
    Molecular Formula:
    C44H64O24
    Molecular Weight:
    976.96
  • Hematoxylin

    Synonym:
    Natural black 1
    Catalog Number:
    42512
    CAS Number:
    517-28-2
    MDL NO:
    MFCD00078111
    Molecular Formula:
    C16H14O6 · xH2O
    Molecular Weight:
    302.28
  • Giemsa stain

    Grade:
    Technical grade
    Synonym:
    Azure mixture sicc. Giemsa stain
    Catalog Number:
    42510
    Grade:
    Technical grade
    CAS Number:
    51811-82-6
    MDL NO:
    MFCD00081642
    Molecular Formula:
    C14H14ClN3S
    Molecular Weight:
    291.8
  • Ferroin indicator solution (0.1 wt. % in H2O)

    Synonym:
    1,10-Phenanthroline iron(II) sulfate complex
    Catalog Number:
    42509
    CAS Number:
    14634-91-4
    MDL NO:
    MFCD00036428
    Molecular Formula:
    C36H24FeN6O4S
    Molecular Weight:
    692.52
  • Malachite green oxalate salt

    Hazmat
    Grade:
    Technical grade
    Purity:
    99 - 100% (Dye Content)
    Synonym:
    N,N,N',N'-Tetramethyl-4,4'-diaminotriphenylcarbenium oxalate
    Hazmat
    Catalog Number:
    42514
    Grade:
    Technical grade
    CAS Number:
    2437-29-8
    Purity Limit:
    99 - 100% (Dye Content)
    MDL NO:
    MFCD00151209
    Molecular Formula:
    C23H25N2·C2HO4·0.5C2H2O4
    Molecular Weight:
    0
  • Direct red 81

    Purity:
    ≥ 50% (Dye content)
    Synonym:
    Disodium7-benzamido-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate
    Catalog Number:
    42507
    CAS Number:
    2610-11-9
    Purity Limit:
    ≥ 50% (Dye content)
    MDL NO:
    MFCD00003949
    Molecular Formula:
    C29H19N5Na2O8S2
    Molecular Weight:
    675.6
  • Chicago sky blue 6B

    Purity:
    ≥ 80% (Dye content)
    Synonym:
    Direct blue 1
    Catalog Number:
    42502
    CAS Number:
    2610-05-1
    Purity Limit:
    ≥ 80% (Dye content)
    MDL NO:
    MFCD00004020
    Molecular Formula:
    C34H24N6Na4O16S4
    Molecular Weight:
    992.8
  • Congo red

    Grade:
    Certifiable Grade
    Synonym:
    Congo red 4B
    Catalog Number:
    42504
    Grade:
    Certifiable Grade
    CAS Number:
    573-58-0
    MDL NO:
    MFCD00004028
    Molecular Formula:
    C32H22N6Na2O6S2
    Molecular Weight:
    696.66
  • Carminic acid

    Purity:
    ≥ 90% (HPLC)
    Synonym:
    Natural red 4
    Catalog Number:
    42501
    CAS Number:
    1260-17-9
    Purity Limit:
    ≥ 90% (HPLC)
    MDL NO:
    MFCD00167028
    Molecular Formula:
    C22H20O13
    Molecular Weight:
    492.39
  • Alizarin red S

    Grade:
    Certifiable Grade
    Synonym:
    3,4-Dihydroxy-9,10-dioxo-2-anthracenesulfonic acid sodium salt
    Catalog Number:
    42484
    Grade:
    Certifiable Grade
    CAS Number:
    130-22-3
    MDL NO:
    MFCD00013049
    Molecular Formula:
    C14H7NaO7S
    Molecular Weight:
    342.26
  • Bromocresol purple solution (0.04 wt. % in H2O)

    Purity:
    ≥ 90% (Dye content)
    Synonym:
    5',5''-Dibromo-o-cresolsulfonephthalein sodium salt
    Catalog Number:
    42495
    CAS Number:
    62625-30-3
    Purity Limit:
    ≥ 90% (Dye content)
    MDL NO:
    MFCD00148896
    Molecular Formula:
    C21H15Br2NaO5S
    Molecular Weight:
    562.2
  • Chlorophenol red

    Grade:
    Indicator grade
    Purity:
    ≥ 74% (Dye content)
    Synonym:
    3',3'-Dichlorophenolsulfonaphthalein
    Catalog Number:
    42503
    Grade:
    Indicator grade
    CAS Number:
    4430-20-0
    Purity Limit:
    ≥ 74% (Dye content)
    MDL NO:
    MFCD00005877
    Molecular Formula:
    C19H12Cl2O5S
    Molecular Weight:
    423.27
  • Crystal violet

    Hazmat
    Grade:
    Certifiable Grade
    Purity:
    ≥ 90% (Dye content)
    Synonym:
    Basic violet 3
    Hazmat
    Catalog Number:
    42506
    Grade:
    Certifiable Grade
    CAS Number:
    548-62-9
    Purity Limit:
    ≥ 90% (Dye content)
    MDL NO:
    MFCD00011750
    Molecular Formula:
    C25H30N3Cl
    Molecular Weight:
    0
  • Catalog Number:
    42499
    CAS Number:
    34722-90-2
    MDL NO:
    MFCD00077263
    Molecular Formula:
    C27H27Br2NaO5S
    Molecular Weight:
    646.36
  • Bromophenol blue solution (0.04 wt. % in H2O)

    Synonym:
    3',3'',5',5''-Tetrabromophenolsulfonephthalein
    Catalog Number:
    42497
    CAS Number:
    34725-61-6
    MDL NO:
    MFCD00013793
    Molecular Formula:
    C19H9Br4NaO5S
    Molecular Weight:
    691.94
  • Brilliant blue R concentrate

    Hazmat
    Grade:
    Suitable for SDS-PAGE, methanol solution
    Synonym:
    Acid blue 83
    Hazmat
    Catalog Number:
    42490
    Grade:
    Suitable for SDS-PAGE, methanol solution
    CAS Number:
    6104-59-2
    MDL NO:
    MFCD00041762
    Molecular Formula:
    C45H44N3NaO7S2
    Molecular Weight:
    0
  • Basic fuchsin (pararosaniline acetate, 3 parts, pararosaniline chloride, 1 part)

    Grade:
    Certifiable Grade
    Purity:
    ≥ 88% (Dye content)
    Synonym:
    Basic red 9
    Catalog Number:
    42488
    Grade:
    Certifiable Grade
    CAS Number:
    58969-01-0
    Purity Limit:
    ≥ 88% (Dye content)
    MDL NO:
    MFCD00012569
  • Bromocresol green sultone form (indicator (pH 3.8-5.4))

    Grade:
    For microscopy (Bot., Hist., Vit.)
    Purity:
    ≥ 95% (Dye content)
    Synonym:
    3',3'',5',5''-Tetrabromo-m-cresolsulfonephthalein
    Catalog Number:
    42494
    Grade:
    For microscopy (Bot., Hist., Vit.)
    CAS Number:
    76-60-8
    Purity Limit:
    ≥ 95% (Dye content)
    MDL NO:
    MFCD00005874
    Molecular Formula:
    C21H14Br4O5S
    Molecular Weight:
    698.01
  • Bromoxylenol blue

    Grade:
    Indicator grade
    Purity:
    ≥ 95% (Dye content)
    Synonym:
    3',3″-Dibromo-p-xylenolsulfonphthalein
    Catalog Number:
    42500
    Grade:
    Indicator grade
    CAS Number:
    40070-59-5
    Purity Limit:
    ≥ 95% (Dye content)
    MDL NO:
    MFCD00005873
    Molecular Formula:
    C23H20Br2O5S
    Molecular Weight:
    568.27
  • Bromophenol blue sodium salt

    Grade:
    For molecular biology, suitable for electrophoresis
    Synonym:
    3',3'',5',5''-Tetrabromophenolsulfophthalein sodium salt
    Catalog Number:
    42496
    Grade:
    For molecular biology, suitable for electrophoresis
    CAS Number:
    34725-61-6
    MDL NO:
    MFCD00013793
    Molecular Formula:
    C19H9Br4NaO5S
    Molecular Weight:
    691.94
  • 4-(Dimethylamino)benzaldehyde

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    Ehrlich's reagent
    Catalog Number:
    42480
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00003381
    Molecular Formula:
    C9H11NO
  • Azure B

    Purity:
    ≥ 89% (Dye content)
    Synonym:
    N,N,N'-Trimethylthionin
    Catalog Number:
    42486
    CAS Number:
    531-55-5
    Purity Limit:
    ≥ 89% (Dye content)
    MDL NO:
    MFCD00011935
    Molecular Formula:
    C15H16ClN3S
    Molecular Weight:
    305.83
  • Bromothymol blue sodium salt

    Synonym:
    3',3''-Dibromothymolsulfonephthalein sodium salt
    Catalog Number:
    42498
    CAS Number:
    34722-90-2
    MDL NO:
    MFCD00077263
    Molecular Formula:
    C27H27Br2NaO5S
    Molecular Weight:
    646.36
  • Catalog Number:
    42487
    CAS Number:
    53092-85-6
    MDL NO:
    MFCD00084753
  • 2,6-Dichloroindophenol sodium salt hydrate

    Grade:
    suitable for vitamin C determination
    Synonym:
    2,6-Dichloro-N-(4-hydroxyphenyl)-1,4-benzoquinoneiminesodium salt
    Catalog Number:
    42474
    Grade:
    suitable for vitamin C determination
    CAS Number:
    1266615-56-8
    MDL NO:
    MFCD00150014
    Molecular Formula:
    C12H6Cl2NNaO2·xH2O
    Molecular Weight:
    290.08
  • Bromocresol green sodium salt solution (0.04 wt. % in H2O)

    Synonym:
    3',3'',5',5''-Tetrabromo-m-cresolsulfonephthalein sodiumsalt
    Catalog Number:
    42493
    CAS Number:
    62625-32-5
    MDL NO:
    MFCD00148898
    Molecular Formula:
    C21H13Br4NaO5S
    Molecular Weight:
    720.0
  • Crystal violet solution, Conc 1% (H2O)

    Hazmat
    Purity:
    ≥ 90% (TLC)
    Hazmat
    Catalog Number:
    42472
    CAS Number:
    548-62-9
    Purity Limit:
    ≥ 90% (TLC)
    MDL NO:
    MFCD00011750
    Molecular Formula:
    C25H30ClN3
    Molecular Weight:
    0
  • Hazmat
    Catalog Number:
    42489
    CAS Number:
    6104-58-1
    MDL NO:
    MFCD00078482
    Molecular Formula:
    C47H48N3NaO7S2
    Molecular Weight:
    0
  • 4-(4-Nitrophenylazo)resorcinol

    Purity:
    ≥ 90% (Dye content)
    Synonym:
    Azoviolet
    Catalog Number:
    42479
    CAS Number:
    74-39-5
    Purity Limit:
    ≥ 90% (Dye content)
    MDL NO:
    MFCD00007310
    Molecular Formula:
    C12H9N3O4
    Molecular Weight:
    259.22
  • Glycerol

    Purity:
    ≥ 99.5% (GC)
    Synonym:
    1,2,3-Propanetriol
    Catalog Number:
    42465
    CAS Number:
    56-81-5
    Purity Limit:
    ≥ 99.5% (GC)
    MDL NO:
    MFCD00004722
    Molecular Formula:
    C3H8O3
    Molecular Weight:
    92.09
  • Acridine orange hydrochloride solution, 10 mg/mL in H2O

    Purity:
    ≥ 99% (HPLC)
    Synonym:
    3,6-Bis(dimethylamino)acridine hydrochloride
    Catalog Number:
    42482
    CAS Number:
    65-61-2
    Purity Limit:
    ≥ 99% (HPLC)
    MDL NO:
    MFCD00012660
    Molecular Formula:
    C17H19N3·HCl
    Molecular Weight:
    301.81
  • 3-(2-Pyridyl)-5,6-di(2-furyl)-1,2,4-triazine-5′,5′′-disulfonic acid disodium salt

    Synonym:
    5,5'-[3-(2-Pyridyl)-1,2,4-triazine-5,6-diyl]difuran-2-sulfonic aciddisodium salt
    Catalog Number:
    42475
    CAS Number:
    79551-14-7
    MDL NO:
    MFCD00040642
    Molecular Formula:
    C16H8N4Na2O8S2
    Molecular Weight:
    494.37
  • Catalog Number:
    42473
    CAS Number:
    76-54-0
    MDL NO:
    MFCD00005047
    Molecular Formula:
    C20H10Cl2O5
    Molecular Weight:
    401.2
  • 4-(2-Pyridylazo)resorcinol monosodium salt hydrate

    Purity:
    ≥ 97.5% (HPLC)
    Synonym:
    PAR monosodium salt hydrate
    Catalog Number:
    42478
    CAS Number:
    16593-81-0
    Purity Limit:
    ≥ 97.5% (HPLC)
    MDL NO:
    MFCD00150712
    Molecular Formula:
    C11H8N3NaO2·xH2O
    Molecular Weight:
    237.19
  • α-Naphtholphthalein

    Grade:
    Practical grade
    Purity:
    ≥ 80% (Assay by titration)
    Catalog Number:
    42481
    Grade:
    Practical grade
    CAS Number:
    596-01-0
    Purity Limit:
    ≥ 80% (Assay by titration)
    MDL NO:
    MFCD00036202
    Molecular Formula:
    C28H18O4
    Molecular Weight:
    418.44
  • Brilliant green

    Purity:
    ~ 90% (Dye content)
    Synonym:
    Astradiamant green GX
    Catalog Number:
    42492
    CAS Number:
    633-03-4
    Purity Limit:
    ~ 90% (Dye content)
    MDL NO:
    MFCD00011880
    Molecular Formula:
    C27H34N2O4S
    Molecular Weight:
    482.63
  • Hazmat
    Catalog Number:
    42491
    CAS Number:
    6104-59-2
    MDL NO:
    MFCD00041762
    Molecular Formula:
    C45H44N3NaO7S2
    Molecular Weight:
    0
  • Azure A chloride

    Grade:
    Certifiable Grade
    Purity:
    ≥ 75% (Dye content)
    Catalog Number:
    42485
    Grade:
    Certifiable Grade
    CAS Number:
    531-53-3
    Purity Limit:
    ≥ 75% (Dye content)
    MDL NO:
    MFCD00012112
    Molecular Formula:
    C14H14ClN3S
    Molecular Weight:
    291.8
  • Picric acid solution (1.3% in H2O, saturated)

    Synonym:
    2,4,6-Trinitrophenol
    Catalog Number:
    42469
    CAS Number:
    88-89-1
    MDL NO:
    MFCD00007102
    Molecular Formula:
    C6H3N3O7
    Molecular Weight:
    229.1
  • 4-(2-Pyridylazo)resorcinol

    Purity:
    ≥ 96% (HPLC)
    Synonym:
    PAR
    Catalog Number:
    42477
    CAS Number:
    1141-59-9
    Purity Limit:
    ≥ 96% (HPLC)
    MDL NO:
    MFCD00006256
    Molecular Formula:
    C11H9N3O2
    Molecular Weight:
    215.21
  • 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4′,4′′-disulfonic acid sodium salt

    Synonym:
    5,6-Diphenyl-3-(2-pyridyl)-1,2,4-triazine-4',4″-disulfonic acidsodium salt
    Catalog Number:
    42476
    CAS Number:
    69898-45-9
    MDL NO:
    MFCD00078417
    Molecular Formula:
    C20H13N4NaO6S2
    Molecular Weight:
    492.46
  • Aniline blue solution (2.5% in 2% acetic acid)

    Purity:
    ≥ 99% (Staining strength)
    Catalog Number:
    42471
    CAS Number:
    28631-66-5
    Purity Limit:
    ≥ 99% (Staining strength)
    MDL NO:
    MFCD00036130
    Molecular Formula:
    C32H25N3O9S3Na2
    Molecular Weight:
    737.73
  • N-[4-(2,4-Dimethylphenyl)-2-thiazolyl]-4-pyridinecarboxamide

    Purity:
    ≥ 98% (HPLC)
    Synonym:
    N-[4-(2,4-Dimethylphenyl)thiazol-2-yl]isonicotinamide
    Catalog Number:
    42448
    CAS Number:
    560103-80-2
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD03384899
    Molecular Formula:
    C17H15N3OS
    Molecular Weight:
    309.39
  • 3-Hydroxytyrosol

    Purity:
    ≥ 95% (NMR)
    Synonym:
    3,4-Dihydroxyphenethyl alcohol
    Catalog Number:
    42444
    CAS Number:
    10597-60-1
    Purity Limit:
    ≥ 95% (NMR)
    MDL NO:
    MFCD01320529
    Molecular Formula:
    C8H10O3
    Molecular Weight:
    154.17