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Stains & Dyes

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  • Bismark Brown Y

    Grade:
    Certifiable Grade
    Purity:
    ≥ 45% (Dye content)
    Synonym:
    Basic Brown 1cf0
    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
  • 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:
    334.81
  • 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
  • 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
  • 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
  • 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
  • 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:
    110.11
  • Tartrazine

    Purity:
    ≥ 85% (dye content)
    Synonym:
    3-Carboxy-5-hydroxy-1-p-sulfophenyl-4-p-sulfophenylazopyrazole trisodium 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
  • New Methylene Blue N 

    Purity:
    ≥ 90% (Dye content)
    Synonym:
    Basic Blue 24cf0
    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
  • Patent Blue V sodium salt for Microscopy

    Purity:
    ≥ 85% (Dye content)
    Synonym:
    Acid Blue 3cf0
    Catalog Number:
    22906
    CAS Number:
    20262-76-4
    Purity Limit:
    ≥ 85% (Dye content)
    MDL NO:
    MFCD09608138
    Molecular Formula:
    C27H31N2O7S2Na
    Molecular Weight:
    582.7
  • Eriochrome Cyanine R

    Synonym:
    Mordant Blue 3cf0
    Catalog Number:
    22878
    CAS Number:
    3564-18-9
    MDL NO:
    MFCD00012411
    Molecular Formula:
    C23H15Na3O9S
    Molecular Weight:
    536.4
  • 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
  • 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
  • Orcein (synthetic)

    Synonym:
    Natural red 28
    Catalog Number:
    00592
    CAS Number:
    1400-62-0
    MDL NO:
    MFCD00062310
    Molecular Weight:
    0
  • Auramine O

    Hazmat
    Grade:
    Certifiable Grade
    Purity:
    ≥ 80% (Dye Content)
    Synonym:
    Basic yellow 2
    Hazmat
    Catalog Number:
    00478
    Grade:
    Certifiable Grade
    CAS Number:
    2465-27-2
    Purity Limit:
    ≥ 80% (Dye Content)
    MDL NO:
    MFCD00012484
    Molecular Formula:
    C17H21N3·HCl
    Molecular Weight:
    321.9
  • Fisetin

    Grade:
    CI 75620
    Purity:
    ≥ 98% (HPLC)
    Synonym:
    3,7,3',4'-Tetrahydroxyflavone
    Catalog Number:
    38609
    Grade:
    CI 75620
    CAS Number:
    528-48-3
    Purity Limit:
    ≥ 98% (HPLC)
    MDL NO:
    MFCD00006829
    Molecular Formula:
    C15H10O6
    Molecular Weight:
    286.24
  • Alizarin complexone

    Purity:
    ≥ 80% (Assay by titration)
    Synonym:
    Alizarin-3-methylimino-N,N-diacetic acid
    Catalog Number:
    38588
    CAS Number:
    3952-78-1
    Purity Limit:
    ≥ 80% (Assay by titration)
    MDL NO:
    MFCD00001202
    Molecular Formula:
    C19H15NO8
    Molecular Weight:
    385.33
  • Pigment red 64 (Calcium salt)

    Grade:
    CI 15800
    Synonym:
    Brilliant lake red R (Calcium salt)
    Catalog Number:
    38631
    Grade:
    CI 15800
    CAS Number:
    6371-76-2
    MDL NO:
    MFCD00059533
    Molecular Weight:
    0.0
  • Solvent black 5

    Grade:
    CI 50415
    Purity:
    98 - 102% (Dye content)
    Catalog Number:
    38507
    Grade:
    CI 50415
    CAS Number:
    11099-03-9
    Purity Limit:
    98 - 102% (Dye content)
    MDL NO:
    MFCD00071316
    Molecular Weight:
    0
  • 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:
    768.79
  • 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
  • o-Phenylenediamine

    Hazmat
    Purity:
    ≥ 99% (GC)
    Synonym:
    1,2-Diaminobenzene
    Hazmat
    Catalog Number:
    31478
    CAS Number:
    95-54-5
    Purity Limit:
    ≥ 99% (GC)
    MDL NO:
    MFCD00007721
    Molecular Formula:
    C6H8N2
    Molecular Weight:
    108.14
  • Carmine (Alum lake)

    Grade:
    Certifiable Grade
    Purity:
    50 - 55% (Dye content)
    Synonym:
    Natural Red 4cf0
    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:
    Acid Yellow 3cf0
    Catalog Number:
    22931
    CAS Number:
    8004-92-0
    Purity Limit:
    ≥ 85% (Dye content)
    MDL NO:
    MFCD00080727
    Molecular Formula:
    C19H9NNa2O8S2
    Molecular Weight:
    489.4
  • Brilliant Black BN 

    Purity:
    ≥ 80% (Dye content)
    Synonym:
    Naphthol Blackcf0
    Catalog Number:
    22929
    CAS Number:
    2519-30-4
    Purity Limit:
    ≥ 80% (Dye content)
    MDL NO:
    MFCD00078980
    Molecular Formula:
    C28H17N5O14S4·4Na
    Molecular Weight:
    867.69
  • Murexide

    Grade:
    ACS reagent
    Synonym:
    5,5'-Nitrilodibarbituric acid monoammonium salt
    Catalog Number:
    22886
    Grade:
    ACS reagent
    CAS Number:
    3051-09-0
    MDL NO:
    MFCD00012777
    Molecular Formula:
    C8H8N6O6
    Molecular Weight:
    284.19
  • Guinea Green B  

    Purity:
    Dye content: ≥ 50%
    Synonym:
    Acid Green 3cf0
    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
  • Ethyl Violet  

    Purity:
    ≥ 93% (Dye content)
    Synonym:
    Basic Violetcf0
    Catalog Number:
    22859
    CAS Number:
    2390-59-2
    Purity Limit:
    ≥ 93% (Dye content)
    MDL NO:
    MFCD00011765
    Molecular Formula:
    C31H42N3Cl
    Molecular Weight:
    492.15
  • 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
  • Alizarin Yellow R

    Purity:
    ≥ 70% (dye content)
    Synonym:
    Mordant Orange 1
    Catalog Number:
    22831
    CAS Number:
    2243-76-7
    Purity Limit:
    ≥ 70% (dye content)
    MDL NO:
    MFCD00007313
    Molecular Formula:
    C13H9N3O5
    Molecular Weight:
    287.23
  • 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
  • Chicago Sky Blue 6B

    Purity:
    Dye content: ~ 50%
    Synonym:
    Direct Blue
    Catalog Number:
    22806
    CAS Number:
    2610-05-1
    Purity Limit:
    Dye content: ~ 50%
    MDL NO:
    MFCD00004020
    Molecular Formula:
    C34H24N6O16S4·4Na
    Molecular Weight:
    992.81
  • Acid Green 25

    Purity:
    ≥ 96% (Dye content)
    Synonym:
    Alizarian Cyamine Green B
    Catalog Number:
    22769
    CAS Number:
    4403-90-1
    Purity Limit:
    ≥ 96% (Dye content)
    MDL NO:
    MFCD00001193
    Molecular Formula:
    C28H20N2Na2O8S2
    Molecular Weight:
    622.58
  • Rose Bengal

    Purity:
    ≥ 90% (Dye content)
    Synonym:
    4,5,6,7-Tetrachloro-2',4',5',7'-tetraiodofluorescein disodium salt
    Catalog Number:
    21920
    CAS Number:
    632-69-9
    Purity Limit:
    ≥ 90% (Dye content)
    MDL NO:
    MFCD00151169
    Molecular Formula:
    C20H2Cl4I4Na2O5
    Molecular Weight:
    1017.62
  • 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:
    244.3
  • 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
  • Trypan blue

    Hazmat
    Grade:
    Certifiable Grade
    Purity:
    ≥ 70% (dye content)
    Synonym:
    Direct blue 14
    Hazmat
    Catalog Number:
    01636
    Grade:
    Certifiable Grade
    CAS Number:
    72-57-1
    Purity Limit:
    ≥ 70% (dye content)
    MDL NO:
    MFCD00003969
    Molecular Formula:
    C34H24N6O14S4Na4
    Molecular Weight:
    960.82
  • Phloxine B

    Grade:
    Certifiable Grade
    Purity:
    ≥ 92.5% (Dye content)
    Synonym:
    Cyanosine
    Catalog Number:
    00803
    Grade:
    Certifiable Grade
    CAS Number:
    18472-87-2
    Purity Limit:
    ≥ 92.5% (Dye content)
    MDL NO:
    MFCD00070627
    Molecular Formula:
    C20H2Br4Cl4O5Na2
    Molecular Weight:
    829.6
  • Fast green FCF

    Grade:
    Certifiable Grade
    Purity:
    ≥ 96% (HPLC)
    Synonym:
    Food green 3
    Catalog Number:
    00475
    Grade:
    Certifiable Grade
    CAS Number:
    2353-45-9
    Purity Limit:
    ≥ 96% (HPLC)
    MDL NO:
    MFCD00013053
    Molecular Formula:
    C37H34N2O10S3Na2
    Molecular Weight:
    808.86
  • 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
    Molecular Weight:
    0
  • 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