Stains & Dyes

Find stains and dyes for visualization, detection, and assay readouts across biology and analytical workflows. Use this page to compare labeling and colorimetric reagents for routine lab applications.

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  1. Zinquin ethyl ester
    CAS: 181530-09-6 PubChem CID: 3638243 Formula: C21H22N2O5S Molecular Weight: 414.47
    In Stock Item #: Z274867
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    Technical Identifiers
    IUPAC Name
    ethyl 2-[2-methyl-8-[(4-methylphenyl)sulfonylamino]quinolin-6-yl]oxyacetate
    SMILES
    CCOC(=O)COC1=CC(=C2C(=C1)C=CC(=N2)C)NS(=O)(=O)C3=CC=C(C=C3)C
    InChIKey
    KCASTCXJTDRDFT-UHFFFAOYSA-N
    InChI
    1S/C21H22N2O5S/c1-4-27-20(24)13-28-17-11-16-8-7-15(3)22-21(16)19(12-17)23-29(25,26)18-9-5-14(2)6-10-18/h5-12,23H,4,13H2,1-3H3
    Synonyms
    Ethyl 2-[2-methyl-8-[(4-methylphenyl)sulfonylamino]quinolin-6-yl]oxyacetate | Zinquinethylester | FT-0675912 | AKOS02...
  2. Leucomalachite Green
    CAS: 129-73-7 EC Number: 204-961-9 Formula: C23H26N2 Molecular Weight: 330.47
    In Stock Item #: L102032
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    Technical Identifiers
    IUPAC Name
    4-[[4-(dimethylamino)phenyl]-phenylmethyl]-N,N-dimethylaniline
    SMILES
    CN(C)C1=CC=C(C=C1)C(C2=CC=CC=C2)C3=CC=C(C=C3)N(C)C
    InChIKey
    WZKXBGJNNCGHIC-UHFFFAOYSA-N
    InChI
    1S/C23H26N2/c1-24(2)21-14-10-19(11-15-21)23(18-8-6-5-7-9-18)20-12-16-22(17-13-20)25(3)4/h5-17,23H,1-4H3
    Synonyms
    LeucoMalachiteGreen | Malachite green leuco base | Malachite green leuco | Leucomalachite green | 4,4'-Bis(dimethylam...
  3. PDT disulfonate
    CAS: 69898-45-9 EC Number: 274-196-3 Formula: C20H13N4NaO6S2 Molecular Weight: 492.46
    In Stock Item #: P113310
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    Technical Identifiers
    IUPAC Name
    sodium;4-[3-pyridin-2-yl-6-(4-sulfophenyl)-1,2,4-triazin-5-yl]benzenesulfonate
    SMILES
    C1=CC=NC(=C1)C2=NC(=C(N=N2)C3=CC=C(C=C3)S(=O)(=O)O)C4=CC=C(C=C4)S(=O)(=O)[O-].[Na+]
    InChIKey
    ZGVNYCXXBQPDPQ-UHFFFAOYSA-M
    InChI
    1S/C20H14N4O6S2.Na/c25-31(26,27)15-8-4-13(5-9-15)18-19(14-6-10-16(11-7-14)32(28,29)30)23-24-20(22-18)17-3-1-2-12-21-17;/h1-12H,(H,25,26,27)(H,28,29,30show more
    Synonyms
    3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4',4''-disulfonic acid sodium salt, BioXtra | Ferrozine sodium | PD130670 |...
  4. Crystal Violet Nonahydrate [Ion association reagent for spectrophotometric analysis]
    CAS: 60662-33-1 Formula: C25H30ClN3·9H2O Molecular Weight: 407.99
    Out of Stock Item #: C153303
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    Technical Identifiers
    IUPAC Name
    [4-[bis[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium;chloride;nonahydrate
    SMILES
    CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[N+](C)C)C=C2)C3=CC=C(C=C3)N(C)C.O.O.O.O.O.O.O.O.O.[Cl-]
    InChIKey
    QCYZZDDACAOKCV-UHFFFAOYSA-M
    InChI
    1S/C25H30N3.ClH.9H2O/c1-26(2)22-13-7-19(8-14-22)25(20-9-15-23(16-10-20)27(3)4)21-11-17-24(18-12-21)28(5)6;;;;;;;;;;/h7-18H,1-6H3;1H;9*1H2/q+1;;;;;;;;;show more
    Synonyms
    N-(4-(Bis(4-(dimethylamino)phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)-N-methylmethanaminiumchloridenonahydrate | ...
  5. Isoviolanthrone
    CAS: 128-64-3 Formula: C34H16O2 Molecular Weight: 456.5
    In Stock Item #: I340873
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    Technical Identifiers
    IUPAC Name
    nonacyclo[18.10.2.22,5.03,16.04,13.06,11.017,31.021,26.028,32]tetratriaconta-1(30),2,4,6,8,10,13,15,17(31),18,20(32),21,23,25,28,33-hexadecaene-12,27-show more
    SMILES
    C1=CC=C2C(=C1)C3=C4C(=CC=C5C4=C(C=C3)C6=CC=C7C8=C(C=CC5=C68)C9=CC=CC=C9C7=O)C2=O
    InChIKey
    BSIHWSXXPBAGTC-UHFFFAOYSA-N
    InChI
    1S/C34H16O2/c35-33-25-7-3-1-5-17(25)19-9-11-21-24-14-16-28-32-20(18-6-2-4-8-26(18)34(28)36)10-12-22(30(24)32)23-13-15-27(33)31(19)29(21)23/h1-16H
    Synonyms
    Dinaphtho(1,2,3-cd:1',2',3'-lm)perylene-9,18-dione | Isodibenzanthrone | Romantrene Brilliant Violet 4R | Romantrene ...
  6. Sulforhodamine B acid chloride [Rhodamine B sulfonyl chloride], [known as Lissamine™ Rhodamine B Sulfonyl Chloride, TM of PerkinElmer]
    CAS: 62796-29-6 PubChem CID: 65223 Formula: C27H29ClN2O6S2 Molecular Weight: 577.112
    for Fluorescence analysis ? Fluorescence-analysis grade — very low fluorescent impurities for clean spectra. Use in fluorescence assays where background interferes.
    Out of Stock Item #: S131272
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    Technical Identifiers
    IUPAC Name
    5-chlorosulfonyl-2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]benzenesulfonate
    SMILES
    CCN(CC)C1=CC2=C(C=C1)C(=C3C=CC(=[N+](CC)CC)C=C3O2)C4=C(C=C(C=C4)S(=O)(=O)Cl)S(=O)(=O)[O-]
    InChIKey
    YERWMQJEYUIJBO-UHFFFAOYSA-N
    InChI
    1S/C27H29ClN2O6S2/c1-5-29(6-2)18-9-12-21-24(15-18)36-25-16-19(30(7-3)8-4)10-13-22(25)27(21)23-14-11-20(37(28,31)32)17-26(23)38(33,34)35/h9-17H,5-8H2,1show more
    Synonyms
    HY-D0966 | Xanthylium, 9-(4-(chlorosulfonyl)-2-sulfophenyl)-3,6-bis(diethylamino)-, hydroxide, inner salt | SCHEMBL83...
  7. N,O-Didansyl-L-tyrosine cyclohexylammonium salt
    CAS: 102783-47-1 PubChem CID: 71308549 Formula: C39H46N4O7S2 Molecular Weight: 746.94
    Out of Stock Item #: N334716
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    Technical Identifiers
    IUPAC Name
    cyclohexanamine;(2S)-2-[[5-(dimethylamino)naphthalen-1-yl]sulfonylamino]-3-[4-[5-(dimethylamino)naphthalen-1-yl]sulfonyloxyphenyl]propanoic acid
    SMILES
    CN(C)C1=CC=CC2=C1C=CC=C2S(=O)(=O)NC(CC3=CC=C(C=C3)OS(=O)(=O)C4=CC=CC5=C4C=CC=C5N(C)C)C(=O)O.C1CCC(CC1)N
    InChIKey
    MVXVRKZUVTWXRD-JCOPYZAKSA-N
    InChI
    1S/C33H33N3O7S2.C6H13N/c1-35(2)29-13-5-11-26-24(29)9-7-15-31(26)44(39,40)34-28(33(37)38)21-22-17-19-23(20-18-22)43-45(41,42)32-16-8-10-25-27(32)12-6-1show more
    Synonyms
    cyclohexanamine;(2S)-2-[[5-(dimethylamino)naphthalen-1-yl]sulfonylamino]-3-[4-[5-(dimethylamino)naphthalen-1-yl]sulfo...
  8. Fluorescent NIR 885
    CAS: 177194-56-8 PubChem CID: 16211208 Formula: C34H34NO3•ClO4 Molecular Weight: 504.649945
    Out of Stock Item #: F336303
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    Pricing & Pack Sizes
    Technical Identifiers
    SMILES
    CC[N+](=C1C=CC2=CC3=C(/C(=C/C4=C5C(=CC6=C(O5)C7=CC=CC=C7OC6)CCC4)/CCC3)OC2=C1)CC.[O-]Cl(=O)(=O)=O
    Synonyms
    diethyl-[(5E)-5-(6,8,9,10-tetrahydrochromeno[4,3-b]chromen-11-ylmethylidene)-7,8-dihydro-6H-xanthen-3-ylidene]azanium...
  9. MitoScene™ Green I
    CAS: 201860-17-5 PubChem CID: 70691021 Formula: C34H28Cl5N3O Molecular Weight: 671.87
    Solid
    In Stock Item #: M288856
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    Pricing & Pack Sizes
    Technical Identifiers
    IUPAC Name
    2-[(E)-3-[5,6-dichloro-1,3-bis[[4-(chloromethyl)phenyl]methyl]benzimidazol-2-ylidene]prop-1-enyl]-3-methyl-1,3-benzoxazol-3-ium;chloride
    SMILES
    C[N+]1=C(OC2=CC=CC=C21)C=CC=C3N(C4=CC(=C(C=C4N3CC5=CC=C(C=C5)CCl)Cl)Cl)CC6=CC=C(C=C6)CCl.[Cl-]
    InChIKey
    RUVJFMSQTCEAAB-UHFFFAOYSA-M
    InChI
    1S/C34H28Cl4N3O.ClH/c1-39-29-5-2-3-6-32(29)42-34(39)8-4-7-33-40(21-25-13-9-23(19-35)10-14-25)30-17-27(37)28(38)18-31(30)41(33)22-26-15-11-24(20-36)12-show more
    Synonyms
    HY-135056 | AKOS040753072 | mitoTracker Green FM | Baclight(tm)green bacterial stain | 2-(3-(5,6-Dichloro-1,3-bis(4-(...
  10. L 012 sodium salt
    CAS: 143556-24-5 Formula: C13H8CIN4NaO2 Molecular Weight: 310.67
    Solid ≥98%(HPLC)
    In Stock Item #: L287250
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    Technical Identifiers
    IUPAC Name
    sodium;8-amino-5-chloro-4-oxo-7-phenyl-3H-pyrido[3,4-d]pyridazin-1-olate
    SMILES
    C1=CC=C(C=C1)C2=C(C3=C(C(=O)NN=C3[O-])C(=N2)Cl)N.[Na+]
    InChIKey
    IGEUYSJHQQCEFP-UHFFFAOYSA-M
    InChI
    1S/C13H9ClN4O2.Na/c14-11-8-7(12(19)17-18-13(8)20)9(15)10(16-11)6-4-2-1-3-5-6;/h1-5H,15H2,(H,17,19)(H,18,20);/q;+1/p-1
    Synonyms
    sodium 8-amino-5-chloro-4-oxo-7-phenyl-3,4-dihydropyrido[3,4-d]pyridazin-1-olate | L012 sodium | sodium;8-amino-5-chl...
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Frequently Asked Questions

How do I choose the right Stains & Dyes for my work?
Match product specifications to your application requirements. Compare purity, packaging, availability, and certificate of analysis data. Consider scale, downstream processing, and quality requirements.
What specifications matter most for Stains & Dyes?
Purity, packaging, lot-specific certificate of analysis, storage requirements, and shelf life. Match grade to application — research-grade tolerates lower specs than process or analytical work.
How are Stains & Dyes packaged and stored?
Standard packaging includes appropriate light, moisture, and temperature protection. Storage requirements vary by product — check specific documentation for each item.
Are bulk and custom quantities available?
Yes. Many products are stocked from research scale (gram) through process scale (kilogram). Custom quantities, specialized packaging, and supply agreements are available on request.

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