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Stains & Dyes

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  • Erioglaucine  

    Purity:
    ≥ 85% (Dye content)
    Synonym:
    Acid Blue 9
    Catalog Number:
    22876
    CAS Number:
    3844-45-9
    Purity Limit:
    ≥ 85% (Dye content)
    MDL NO:
    MFCD00012141
    Molecular Formula:
    C37H34N2O9S3·2Na
    Molecular Weight:
    792.86
  • 2,3,5-Triphenyl-2H-tetrazolium chloride

    Hazmat
    Purity:
    ≥ 99% (Assay)
    Synonym:
    Tetrazolium red
    Hazmat
    Catalog Number:
    01646
    CAS Number:
    298-96-4
    Purity Limit:
    ≥ 99% (Assay)
    MDL NO:
    MFCD00011963
    Molecular Formula:
    C19H15N4Cl
    Molecular Weight:
    0
  • Lacmoid

    Synonym:
    Resorcinol blue
    Catalog Number:
    37393
    CAS Number:
    33869-21-5
    MDL NO:
    MFCD00005035
    Molecular Formula:
    C24H16N2O6
    Molecular Weight:
    428.39
  • Resorcinol

    Hazmat
    Grade:
    ACS reagent
    Purity:
    99.0 - 100.5% (Assay by titration)
    Synonym:
    1,3-Benzenediol
    Hazmat
    Catalog Number:
    30180
    Grade:
    ACS reagent
    CAS Number:
    108-46-3
    Purity Limit:
    99.0 - 100.5% (Assay by titration)
    MDL NO:
    MFCD00002269
    Molecular Formula:
    C6H4(OH)2
    Molecular Weight:
    0
  • Tartrazine

    Purity:
    ≥ 85% (dye content)
    Synonym:
    3-Carboxy-5-hydroxy-1-p-sulfophenyl-4-p-sulfophenylazopyrazoletrisodium salt
    Catalog Number:
    22937
    CAS Number:
    1934-21-0
    Purity Limit:
    ≥ 85% (dye content)
    MDL NO:
    MFCD00148908
    Molecular Formula:
    C16H9N4O9S2·3Na
    Molecular Weight:
    534.37
  • Patent Blue V sodium salt for Microscopy

    Purity:
    ≥ 85% (Dye content)
    Catalog Number:
    22906
    CAS Number:
    20262-76-4
    Purity Limit:
    ≥ 85% (Dye content)
    MDL NO:
    MFCD09608138
    Molecular Formula:
    C27H31N2O7S2Na
    Molecular Weight:
    582.7
  • Eosin Y disodium salt

    Grade:
    Certifiable Grade
    Purity:
    ≥ 88% (Dye content)
    Synonym:
    Eosin yellowish
    Catalog Number:
    01834
    Grade:
    Certifiable Grade
    CAS Number:
    17372-87-1
    Purity Limit:
    ≥ 88% (Dye content)
    MDL NO:
    MFCD00005040
    Molecular Formula:
    C20H6Br4O5Na2
    Molecular Weight:
    691.88
  • Fluorescein

    Purity:
    99 - 100% (Dye content)
    Synonym:
    CI 45350
    Catalog Number:
    00962
    CAS Number:
    2321-07-5
    Purity Limit:
    99 - 100% (Dye content)
    MDL NO:
    MFCD00005050
    Molecular Formula:
    C20H12O5
    Molecular Weight:
    332.31
  • Berberine sulfate hydrate

    Hazmat
    Purity:
    ≥ 98% (Assay)
    Hazmat
    Catalog Number:
    32448
    CAS Number:
    316-41-6
    Purity Limit:
    ≥ 98% (Assay)
    MDL NO:
    MFCD00661117
    Molecular Formula:
    C40H36N2O12S·H2O
    Molecular Weight:
    0
  • Berberine chloride hydrate

    Purity:
    95 - 102% (Assay)
    Synonym:
    Natural Yellow 18 hydrate
    Catalog Number:
    32447
    CAS Number:
    141433-60-5
    Purity Limit:
    95 - 102% (Assay)
    MDL NO:
    MFCD00149997
    Molecular Formula:
    C20H18ClNO4·H2O
    Molecular Weight:
    371.82
  • Carminic acid

    Purity:
    ≥ 95% (Dye content)
    Synonym:
    Natural red 4
    Catalog Number:
    32122
    CAS Number:
    1260-17-9
    Purity Limit:
    ≥ 95% (Dye content)
    MDL NO:
    MFCD00167028
    Molecular Formula:
    C22H20O13
    Molecular Weight:
    492.39
  • Fluorescein sodium

    Purity:
    ≥ 95% (Dye content)
    Synonym:
    Acid Yellow 73
    Catalog Number:
    22949
    CAS Number:
    518-47-8
    Purity Limit:
    ≥ 95% (Dye content)
    MDL NO:
    MFCD00167039
    Molecular Formula:
    C20H10O5·2Na
    Molecular Weight:
    376.27
  • Carmine (Alum lake)

    Grade:
    Certifiable Grade
    Purity:
    50 - 55% (Dye content)
    Catalog Number:
    22954
    Grade:
    Certifiable Grade
    CAS Number:
    1390-65-4
    Purity Limit:
    50 - 55% (Dye content)
    MDL NO:
    MFCD00167027
    Molecular Formula:
    C22H20O13
    Molecular Weight:
    492.39
  • Quinoline Yellow W/S

    Purity:
    ≥ 85% (Dye content)
    Synonym:
    2-(1,3-Dioxoindan-2-yl)quinolinedisulfonic acid sodium salt
    Catalog Number:
    22931
    CAS Number:
    8004-92-0
    Purity Limit:
    ≥ 85% (Dye content)
    MDL NO:
    MFCD00080727
    Molecular Formula:
    C19H9NNa2O8S2
    Molecular Weight:
    489.4
  • New Methylene Blue N 

    Purity:
    ≥ 90% (Dye content)
    Catalog Number:
    22927
    CAS Number:
    6586-05-6
    Purity Limit:
    ≥ 90% (Dye content)
    MDL NO:
    MFCD00078135
    Molecular Formula:
    2C18H22N3S·2Cl·ZnCl2
    Molecular Weight:
    832.12
  • Bismark Brown Y

    Grade:
    Certifiable Grade
    Purity:
    ≥ 45% (Dye content)
    Synonym:
    4,4'-(m-Phenylenebisazo)bis-m-phenylenediaminedihydrochloride
    Catalog Number:
    22887
    Grade:
    Certifiable Grade
    CAS Number:
    10114-58-6
    Purity Limit:
    ≥ 45% (Dye content)
    MDL NO:
    MFCD00012977
    Molecular Formula:
    C18H18N8·2HCl
    Molecular Weight:
    419.32
  • Guinea Green B  

    Purity:
    Dye content: ≥ 50%
    Catalog Number:
    22875
    CAS Number:
    4680-78-8
    Purity Limit:
    Dye content: ≥ 50%
    MDL NO:
    MFCD00012122
    Molecular Formula:
    C37H35N2O6S2Na
    Molecular Weight:
    690.81
  • Janus Green B

    Grade:
    Certifiable Grade
    Purity:
    ≥ 88% (Dye content)
    Synonym:
    CI 11050
    Catalog Number:
    22858
    Grade:
    Certifiable Grade
    CAS Number:
    2869-83-2
    Purity Limit:
    ≥ 88% (Dye content)
    MDL NO:
    MFCD00011758
    Molecular Formula:
    C30H31N6Cl
    Molecular Weight:
    511.07
  • Curcumin

    Purity:
    ≥ 95% (HPLC)
    Synonym:
    Natural Yellow 3
    Catalog Number:
    22845
    CAS Number:
    458-37-7
    Purity Limit:
    ≥ 95% (HPLC)
    MDL NO:
    MFCD00008365
    Molecular Formula:
    C21H20O6
    Molecular Weight:
    368.38
  • Brilliant Yellow

    Purity:
    ≥ 70% (Dye content)
    Synonym:
    Direct Yellow 4
    Catalog Number:
    22835
    CAS Number:
    3051-11-4
    Purity Limit:
    ≥ 70% (Dye content)
    MDL NO:
    MFCD00007489
    Molecular Formula:
    C26H18N4O8S2·2Na
    Molecular Weight:
    624.56
  • Eosin B

    Grade:
    Certifiable Grade
    Purity:
    ≥ 86% (Dye content)
    Synonym:
    4',5'-Dibromo-2',7'-dinitrofluorescein disodium salt
    Catalog Number:
    22817
    Grade:
    Certifiable Grade
    CAS Number:
    548-24-3
    Purity Limit:
    ≥ 86% (Dye content)
    MDL NO:
    MFCD00005041
    Molecular Formula:
    C20H6Br2N2O9·2Na
    Molecular Weight:
    624.06
  • Congo Red

    Grade:
    ACS Reagent
    Purity:
    ≥ 75% (Dye content)
    Synonym:
    Direct Red 28
    Catalog Number:
    22807
    Grade:
    ACS Reagent
    CAS Number:
    573-58-0
    Purity Limit:
    ≥ 75% (Dye content)
    MDL NO:
    MFCD00004028
    Molecular Formula:
    C32H22N6O6S2·2Na
    Molecular Weight:
    696.67
  • Thymolphthalein complexone

    Purity:
    ≥ 90% (UV)
    Synonym:
    3',3''-Bis[N,N-di(carboxymethyl)aminomethyl]thymolphthalein
    Catalog Number:
    22776
    CAS Number:
    1913-93-5
    Purity Limit:
    ≥ 90% (UV)
    MDL NO:
    MFCD00001619
    Molecular Formula:
    C38H44N2O12
    Molecular Weight:
    720.77
  • o-Dianisidine

    Hazmat
    Purity:
    ≥ 99%
    Synonym:
    3,3'-Dimethoxybenzidine
    Hazmat
    Catalog Number:
    01936
    CAS Number:
    119-90-4
    Purity Limit:
    ≥ 99%
    MDL NO:
    MFCD00008372
    Molecular Formula:
    C14H16N2O2
    Molecular Weight:
    0
  • Neutral red

    Grade:
    Certifiable Grade
    Purity:
    ≥ 69% (Dye content)
    Synonym:
    3-Amino-7-dimethylamino-2-methylphenazine hydrochloride
    Catalog Number:
    01738
    Grade:
    Certifiable Grade
    CAS Number:
    553-24-2
    Purity Limit:
    ≥ 69% (Dye content)
    MDL NO:
    MFCD00012651
    Molecular Formula:
    C15H16N4·HCl
    Molecular Weight:
    288.78
  • Resazurin sodium salt

    Purity:
    ≥ 90% (HPLC)
    Synonym:
    7-Hydroxy-3H-phenoxazin-3-one-10-oxide sodium salt
    Catalog Number:
    01725
    CAS Number:
    62758-13-8
    Purity Limit:
    ≥ 90% (HPLC)
    MDL NO:
    MFCD00005036
    Molecular Formula:
    C12H6NNaO4
    Molecular Weight:
    251.18
  • Orcein (synthetic)

    Synonym:
    Natural red 28
    Catalog Number:
    00592
    CAS Number:
    1400-62-0
    MDL NO:
    MFCD00062310
  • Hematoxylin Certified for Microscopy

    Purity:
    ≥ 75% (Dye content)
    Synonym:
    Natural black 1
    Catalog Number:
    00173
    CAS Number:
    517-28-2
    Purity Limit:
    ≥ 75% (Dye content)
    MDL NO:
    MFCD00078111
    Molecular Formula:
    C16H14O6
    Molecular Weight:
    302.29
  • Acid blue 20

    Grade:
    CI 50405
    Synonym:
    Induline (Water soluble)
    Catalog Number:
    38649
    Grade:
    CI 50405
    CAS Number:
    8004-99-7
    MDL NO:
    MFCD00131375
  • Indanthrone

    Grade:
    CI 69800
    Purity:
    ≥ 97%
    Catalog Number:
    38655
    Grade:
    CI 69800
    CAS Number:
    81-77-6
    Purity Limit:
    ≥ 97%
    MDL NO:
    MFCD00046964
    Molecular Formula:
    C28H14N2O4
    Molecular Weight:
    442.43
  • Acid red 27

    Grade:
    CI 16185
    Purity:
    ≥ 90% (UV)
    Synonym:
    Amaranth
    Catalog Number:
    38665
    Grade:
    CI 16185
    CAS Number:
    915-67-3
    Purity Limit:
    ≥ 90% (UV)
    MDL NO:
    MFCD00004076
    Molecular Formula:
    C20H11N2Na3O10S3
    Molecular Weight:
    604.46
  • Quinizarin blue

    Grade:
    CI 60725
    Purity:
    ≥ 90% (HPLC)
    Synonym:
    1-Hydroxy-4-p-toluidinoanthraquinon
    Catalog Number:
    38653
    Grade:
    CI 60725
    CAS Number:
    81-48-1
    Purity Limit:
    ≥ 90% (HPLC)
    MDL NO:
    MFCD00019148
    Molecular Formula:
    C21H15NO3
    Molecular Weight:
    329.36
  • Quinizarin

    Grade:
    CI 58050
    Purity:
    ≥ 97% (HPLC)
    Synonym:
    1,4-Dihydroxyanthraquinone
    Catalog Number:
    38654
    Grade:
    CI 58050
    CAS Number:
    81-64-1
    Purity Limit:
    ≥ 97% (HPLC)
    MDL NO:
    MFCD00001209
    Molecular Formula:
    C14H8O4
    Molecular Weight:
    240.21
  • Coumarin 343

    Purity:
    ≥ 98% (TLC)
    Synonym:
    2,3,6,7-Tetrahydro-11-oxo-1H,5H,11H-[1]benzopyrano[6,7,8-ij]quinolizine-10-carboxylicacid
    Catalog Number:
    38614
    CAS Number:
    55804-65-4
    Purity Limit:
    ≥ 98% (TLC)
    MDL NO:
    MFCD00051335
    Molecular Formula:
    C16H15NO4
    Molecular Weight:
    285.3
  • 3-Nitroaniline

    Hazmat
    Purity:
    ≥ 98% (GC)
    Hazmat
    Catalog Number:
    38670
    CAS Number:
    99-09-2
    Purity Limit:
    ≥ 98% (GC)
    MDL NO:
    MFCD00007782
    Molecular Formula:
    C6H6N2O2
    Molecular Weight:
    0
  • Sunset yellow FCF

    Purity:
    ≥ 85% (Dye content, dried basis)
    Synonym:
    CI 15985
    Catalog Number:
    38560
    CAS Number:
    2783-94-0
    Purity Limit:
    ≥ 85% (Dye content, dried basis)
    MDL NO:
    MFCD00036437
    Molecular Formula:
    C16H10N2Na2O7S2
    Molecular Weight:
    452.36
  • Pontacyl carmine 2B

    Grade:
    CI 18075
    Purity:
    ≥ 93% (HPLC)
    Catalog Number:
    38642
    Grade:
    CI 18075
    CAS Number:
    6625-46-3
    Purity Limit:
    ≥ 93% (HPLC)
    MDL NO:
    MFCD00059131
    Molecular Formula:
    C19H15N3Na2O9S2
    Molecular Weight:
    539.44
  • Catalog Number:
    38623
    CAS Number:
    60687-93-6
    MDL NO:
    MFCD00071249
  • Oxonol yellow K

    Synonym:
    4,4'-Methylidynebis[1-(4-sulfophenyl)-3-methyl-5-pyrazolone]dipotassium salt
    Catalog Number:
    38657
    CAS Number:
    82407-55-4
    MDL NO:
    MFCD02093486
    Molecular Formula:
    C21H16K2N4O8S2
    Molecular Weight:
    594.7
  • 2-(3,6-Dihexyloxyxanthen-9-yl)benzoic acid

    Purity:
    ≥ 97% (Assay by titration , HPLC)
    Catalog Number:
    38679
    Purity Limit:
    ≥ 97% (Assay by titration , HPLC)
    Molecular Formula:
    C32H38O5
    Molecular Weight:
    502.65
  • Leuco crystal violet

    Purity:
    ≥ 98% (Assay by titration , HPLC)
    Synonym:
    4,4',4''-Methylidynetris(N,N-dimethylaniline)
    Catalog Number:
    38620
    CAS Number:
    603-48-5
    Purity Limit:
    ≥ 98% (Assay by titration , HPLC)
    MDL NO:
    MFCD00008314
    Molecular Formula:
    C25H31N3
    Molecular Weight:
    373.54
  • Fast red ITR base

    Grade:
    CI 37150
    Purity:
    ≥ 98% (Assay by titration , HPLC)
    Synonym:
    Fast red ITR
    Catalog Number:
    38669
    Grade:
    CI 37150
    CAS Number:
    97-35-8
    Purity Limit:
    ≥ 98% (Assay by titration , HPLC)
    MDL NO:
    MFCD00009045
    Molecular Formula:
    C11H18N2O3S
    Molecular Weight:
    258.34
  • Catalog Number:
    38673
    MDL NO:
    MFCD01310220
  • Sudan I

    Grade:
    CI 12055
    Purity:
    ≥ 93% (HPLC)
    Synonym:
    Oil orange
    Catalog Number:
    38659
    Grade:
    CI 12055
    CAS Number:
    842-07-9
    Purity Limit:
    ≥ 93% (HPLC)
    MDL NO:
    MFCD00003911
    Molecular Formula:
    C16H12N2O
    Molecular Weight:
    248.29
  • 2-Nitroaniline

    Hazmat
    Grade:
    CI 37025
    Purity:
    ≥ 99% (GC)
    Hazmat
    Catalog Number:
    38663
    Grade:
    CI 37025
    CAS Number:
    88-74-4
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00007687
    Molecular Formula:
    C6H6N2O2
    Molecular Weight:
    0
  • Fuchsine basic

    Hazmat
    Grade:
    CI 42510
    Synonym:
    Basic violet 14
    Hazmat
    Catalog Number:
    38671
    Grade:
    CI 42510
    Molecular Weight:
    0
  • Catalog Number:
    38678
    MDL NO:
    MFCD00011924
  • Azo blue

    Grade:
    CI 23680
    Synonym:
    Direct violet 39
    Catalog Number:
    38622
    Grade:
    CI 23680
    CAS Number:
    6059-34-3
    MDL NO:
    MFCD00059133
    Molecular Formula:
    C34H24N4Na2O8S2
    Molecular Weight:
    726.69
  • Catalog Number:
    38672
    MDL NO:
    MFCD00197815
  • Omega chrome black blue G

    Grade:
    CI 18160
    Synonym:
    Eriochrome grey SGL
    Catalog Number:
    38639
    Grade:
    CI 18160
    CAS Number:
    6441-96-9
    MDL NO:
    MFCD00059525
    Molecular Formula:
    C18H13ClN3NaO6S
    Molecular Weight:
    457.82