Molecular Biology

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  1. XTT

    XTT

    Starting at: $167.00

    Useful in in vitro cell growth assays with possible applicability to a variety of problems in cellular pharmacology and biology.

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  2. 4’,6-Diamidino-2-phenylindole dihydrochloride (DAPI)

    4’,6-Diamidino-2-phenylindole dihydrochloride (DAPI)

    Starting at: $103.00

    A cationic fluorescent dye which specifically binds to adenine-thymine-rich DNA. Applications include detection of nanogram quantities of DNA in cellular homogenates, and cytofluorometric determination of the DNA base content in human chromosomes. Available in bulk quantities for OEM users at significant savings.

    λ max 342nm

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  3. Filipin (from Streptomyces filipinensis)

    Filipin (from Streptomyces filipinensis)

    Starting at: $566.00

    Polyene antibiotic fluorochrome for cholesterol determination. Used as an antifungal agent.

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  4. 5-Cyano-2,3-di-(p-tolyl)tetrazolium chloride (CTC)

    5-Cyano-2,3-di-(p-tolyl)tetrazolium chloride (CTC)

    Starting at: $97.00

    Cyanoditolyl tetrazolium chloride has been used to measure the redox activity of tumor cells. It has also been employed for direct epifluorescent microscopic enumeration of respiring bacteria in food samples and environmental samples, especially water samples.

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  5. Cibacron Blue, F3GA, C.I. 61211, Affinity Chromatography Grade

    Cibacron Blue 3GA, Affinity Chromatography Grade

    Starting at: $105.00

    Sulfonated triazine dye that can be immobilized on a support matrix and used for affinity chromatography of proteins. Also used for probing nucleotide binding sites in proteins. (Reactive blue 2)

    1H NMR and mass spectrometry data are consistent with the structure shown.

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  6. Fast Blue (FB)

    Fast Blue (FB)

    Starting at: $283.00

    Fast blue fluorescent tracer used in studies of peripheral nervous system to determine the number & origin of neurons projecting to specific area 

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  7. DAB-4HCl (3-3’-Diaminobenzidine tetrahydrochloride) 30ML Vials

    DAB-4HCl (3-3’-Diaminobenzidine tetrahydrochloride) 30ML Vials

    Starting at: $97.00

    Chromogen of choice for immunoperoxidase techniques. The brown reaction product is highly insoluble, and will not diffuse from the site of localization. The color does not fade, and therefore, slides can be saved as a permanent record. The reaction product also chelates with osmium tetroxide and becomes electron dense for use in electron microscopy.

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  8. Hydroethidine™ (Dihydroethidium bromide)

    Hydroethidine™ (Dihydroethidium bromide)

    Starting at: $195.00

    Reduced ethidium bromide. A vital stain. Enters and stains living cells without cellular trauma.

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  9. 2’,7’-Dichlorofluorescein

    2’,7’-Dichlorofluorescein

    Starting at: $209.00

    0.2% Solution in ethanol can be used for the detection of saturated and unsaturated lipids.

    λ max 509nm

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  10. Lissamine Rhodamine B sulfonyl chloride, ~99%

    Lissamine Rhodamine B sulfonyl chloride, ~99%

    Starting at: $301.00

    Fluorescent protein stain with bright orange fluorescence. Used to visualize actin filaments in living amoebas. Useful for waste water testing and various microbiological applications.

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  11. Osmium ammine-B

    Osmium ammine-B

    Starting at: $302.00

    Stable DNA stain.

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  12. Calcein, 2,4-Bis(N,N’-di[carboxymethyl]aminomethyl) fluorescein

    Calcein, 2,4-Bis(N,N’-di[carboxymethyl]aminomethyl) fluorescein

    Starting at: $71.00

    Fluorescent bone stain. Also used for determination of serum magnesium.

    DCAF

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  13. Bisbenzimide (Hoechst 33258)

    Bisbenzimide (Hoechst 33258)

    Starting at: $98.00

    Fluorescent chromosome stain. Recommended use is 10mg/ml for 2-10 minutes. This will vary based on section thickness.

    (2’-[4-Hydroxyphenyl]-5-[4-methyl-1-piperazinyl]-2,5’-bi-1H-benzimidazole trihydrochloride pentahydrate; Hoechst 33258)

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  14. Propidium iodide

    Propidium iodide

    Starting at: $446.00

    Fluorescent marker.

    λ max: 493nm

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  15. Ethidium bromide

    Ethidium bromide

    Starting at: $291.00

    Intercalates double-stranded nucleic acids; frameshift mutagen; fluorescent stain for nucleic acids in electrophoresis; used for DNA quantitation.

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  16. 2% Acridine Orange, Ready-to-Use

    2% Acridine Orange, Ready-to-Use

    Starting at: $83.00

    DNA intercalating dye. A grade of acridine orange of exceptionally high purity, suitable for quantitative work. Learn More

  17. Toluidine blue O, C.I. 52040, certified

    Toluidine blue O, C.I. 52040, certified

    Starting at: $121.00

    A metachromatic, cationic thiazine dye that is widely used in in vitro biological applications. It has also been used in techniques for DNAase detection.

    λmax 626nm

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  18. Toluidine blue O, C.I. 52040, purified

    Toluidine blue O, C.I. 52040, purified

    Starting at: $123.00

    Useful for staining RNA, oligodeoxynucleotides, proteins and glycosaminoglycans.

    λ max 626nm.

    Assay >60% anhydrous dye.

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  19. Fluorescein diacetate

    Fluorescein diacetate

    Starting at: $108.00

    Lipase substrate. Also a fluorescent substrate in studies on membrane permeability and intracellular interactions.

    λ max: 498nm

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  20. Acridine mutagen ICR 191

    Acridine mutagen ICR 191

    Starting at: $334.00

    Frameshift mutagenic standard for Ames test in Salmonella and E. Coli.

    ([6-Chloro-9-(3-[2-chloroethylamino]propylamino)-2-methoxyacridine] dihydrochloride; ICR 191 Acridine mutagen; Ames mutagen 191)

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  21. Purified proteins, C-Reactive protein, human (CRP), >98% purity

    Purified proteins, C-Reactive protein, human (CRP), >98% purity

    Starting at: $317.00

    CRP is isolated from pleural and ascites fluids and sera. Abnormally high levels of serum CRP indicate acute phase disease states. Polysciences’ CRP is suitable for iodination and for preparation of serum control standards. Learn More

  22. Protein G, unconjugated, lyophilized

    Protein G, unconjugated, lyophilized

    Starting at: $417.00

    Protein G, Unconjugated, lyophilized.

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  23. Protein A, unconjugated, lyophilized

    Protein A, unconjugated, lyophilized

    Starting at: $240.00

    Protein A; unconjugated, lyophilized.

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  24. SRfluor® 680 Phenyl

    SRfluor® 680 Phenyl

    Starting at: $220.00

    A lipophilic far-red emitting dye, based upon the squaraine rotaxane family of dyes, which accumulates at lipophilic sites within live cells. Spectral properties: abs max = 650 nm and emission max = 678 nm in DMSO. Provided in Crystalline Powder form.

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  25. SRfluor® 680 Carboxyl

    SRfluor® 680 Carboxyl

    Starting at: $252.00

    A far-red emitting dye, belonging to the squaraine rotaxane family of dyes, which bears a free carboxyl group that can be coupled to free amino groups. Spectral properties: abs max = 650 nm and emission max = 678 nm. Provided in Crystalline Powder form.

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  26. SRfluor® 680 Maleimide

    SRfluor® 680 Maleimide

    Starting at: $325.00

    A far-red emitting dye, belonging to the squaraine rotaxane family of dyes, which bears a maleimide functionality. Spectral properties: abs max = 641 nm and emission max = 664 nm in ethanol. Provided in Crystalline Powder form.
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  27. Naked Gold Nanoparticles

    Naked Gold Nanoparticles

    Starting at: $312.00

    5-8nm bare gold nanoparticles in toluene stabilized by loosely adsorbed tetraoctylammonium bromide. Please allow for a 3 month lead time.

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  28. Mercaptyalkyl PEG Gold Nanoparticles

    Mercaptyalkyl PEG Gold Nanoparticles

    Starting at: $390.00

    Nanoparticle conjugate. Please allow for a 3 month lead time.

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  29. NeuroVue® Maroon - Filter Square For Neuronal Tract Tracing

    NeuroVue® Maroon - Filter Square For Neuronal Tract Tracing

    Starting at: $240.00

    NeuroVue® Dye Filter is useful for neuronal tract tracing studies of up to 3-4 weeks. Spectrally compatible with most fluorescent genetic tags, and NeuroVue® Red, Orange & Emerald. 1cm2 filter coated with the lipophilic far red emitting dye, NeuroVue® Maroon (ex max=647nm; em max=667nm).

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  30. NeuroVue® Red  - Filter Square For Neuronal Tract Tracing

    NeuroVue® Red - Filter Square For Neuronal Tract Tracing

    Starting at: $240.00

    NeuroVue® Dye Filter is useful for neuronal tract tracing studies of up to 3-4 weeks. Spectrally compatible with eGFP, YFP in many systems, and NeuroVue® Maroon & Jade. Spectral unmixing required for use with NeuroVue® Orange. 1 cm² nylon filter coated with the lipophilic red emitting dye, NeuroVue® Red. Typical dye loading: 11-14nmoles/mm².

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  31. NeuroVue® Orange - Filter Square For Neuronal Tract Tracing

    NeuroVue® Orange - Filter Square For Neuronal Tract Tracing

    Starting at: $240.00

    NeuroVue® Dye Filter is useful for neuronal tract tracing studies of up to 3-4 weeks. Spectrally compatible with eGFP and YFP in many systems, and NeuroVue® Maroon, & Jade. Spectral unmixing required for use with NeuroVue® Red. 1cm² filter coated with the lipophilic reddish orange emitting dye, NeuroVue® Orange (ex max=550nm; em max=570nm).

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  32. NeuroVue® Jade - Filter Square For Neuronal Tract Tracing

    NeuroVue® Jade - Filter Square For Neuronal Tract Tracing

    Starting at: $240.00

    Useful for neuronal tract tracing studies of up to five days. Spectrally compatible with NeuroVue® Maroon, Orange & Red. 1cm² nylon filter coated with the lipophilic green emitting dye, NeuroVue® Jade.

    Typical dye loading: 22-30 nmoles/mm,sup>2.

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  33. NeuroVue® Burgundy - Filter Square For Neuronal Tract Tracing

    NeuroVue® Burgundy - Filter Square For Neuronal Tract Tracing

    Starting at: $240.00

    Useful for tract tracing studies of up to 7 days. Spectrally compatible with most fluorescent genetic tags and NeuroVue® Red, Orange, Jade. Spectral unmixing required for use with NeuroVue® Maroon. 1cm² filter coated with lipophilic far red emitting dye, NeuroVue® Burgundy (ex max=683nm; em max=707nm).

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  34. NeuroVue® Red Plus - Filter Square For Neuronal Tract Tracing

    NeuroVue® Red Plus - Filter Square For Neuronal Tract Tracing

    Starting at: $259.00

    Useful for tract tracing studies of up to 3-4 weeks. Spectrally compatible with eGFP, YFP in many systems, and NeuroVue® Maroon and Jade. Spectral unmixing required for use with NeuroVue® Orange. NeuroVue® Red Plus provides faster and more efficient neuron labeling with higher dye loading than standard NeuroVue® Red filter square.

    1 cm2 nylon filter coated with the lipophilic red emitting dye, NeuroVue Red.

    Typical dye loading: 18-21nmoles/mm2.

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  35. Vannas Capsulotomy Scissors, Straight, 7mm Blades

    Vannas Capsulotomy Scissors, Straight, 7mm Blades

    Starting at: $350.00

    Useful for cutting NeuroVue® Dye Coated Filters for neuronal tract tracing studies.

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  36. Vannas Scissors, Straight, 5mm Blades

    Vannas Scissors, Straight, 5mm Blades

    Starting at: $626.00

    Useful for cutting NeuroVue® Dye Coated Filters for neuronal tract tracing studies.

    Features:

    • Straight Cutting Edge, Vannas Microscissors.
    • 5mm blades
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  37. NeuroVue® Jade Solid

    NeuroVue® Jade Solid

    Starting at: $229.00

    For tracing neuronal connections. Dye can be melted or dissolved in solvent then be used for application into small injection sites.

    1 mg of solid dye can be formulated as desired for application.(ex max= 478nm and em max=508nm)

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  38. Androstan Sepharose® 6B Novel Immobilized Steroid Beads

    Androstan Sepharose® 6B Novel Immobilized Steroid Beads

    Starting at: $394.00

    Sepharose® 6B affinity chromatography beads covalently modified with steroids or other ligands such that ligand binding to receptors is not compromised resulting in high receptor-binding specificity.

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  39. Estradiol Sepharose® 6B Novel Immobilized Steroid Beads

    Estradiol Sepharose® 6B Novel Immobilized Steroid Beads

    Starting at: $394.00

    Sepharose® 6B affinity chromatography beads covalently modified with steroids or other ligands such that ligand binding to receptors is not compromised resulting in high receptor-binding specificity.

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  40. Nortestosterone Sepharose® 6B Novel Immobilized Steroid Beads

    Nortestosterone Sepharose® 6B Novel Immobilized Steroid Beads

    Starting at: $445.00

    Sepharose® 6B affinity chromatography beads covalently modified with steroids or other ligands such that ligand binding to receptors is not compromised resulting in high receptor-binding specificity.

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  41. Protease Inhibitor, Antipain Dihydrochloride 5mg

    Protease Inhibitor, Antipain Dihydrochloride 5mg

    Starting at: $136.00

    Powerful proteases can begin degrading your protein samples from the moment cells or tissues are lysed. Protein yield and sample quality can be drastically reduced by proteases. Complex protein solutions are usually treated with a mixture of serveral protease inhibitors in order to preserve the native state of proteins.

    A reversible cysteine and serine protease inhibitor of trypsin, papain and cathepsin A and B. Slightly inhibits plasmin.

    Proteomics Grade

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  42. Protease Inhibitor, AEBSF 50mg

    Protease Inhibitor, AEBSF 50mg

    Starting at: $136.00

    Powerful proteases can begin degrading your protein samples from the moment cells or tissues are lysed. Protein yield and sample quality can be drastically reduced by proteases. Complex protein solutions are usually treated with a mixture of serveral protease inhibitors in order to preserve the native state of proteins.

    A non-toxic, water soluble, stable alternative for PMSF, an irreversible serine protease inhibitor.

    Proteomics Grade

    Purity: 98% (HPLC)

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  43. HOPE® Fixative System I

    HOPE® Fixative System I

    Starting at: $295.00

    HOPE® - Formalin-free fixation technique for molecular pathology and research!

    Tissue conservation using the new HOPE®-technique provides paraffin embedded tissue blocks with native structure of the macro-molecules (protein, DNA, RNA) in the tissue.

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  44. HOPE® Fixative Starter Kit

    HOPE® Fixative Starter Kit

    Starting at: $368.00

    HOPE® - Formalin-free fixation technique for molecular pathology and research!

    Tissue conservation using the new HOPE®-technique provides paraffin embedded tissue blocks with native structure of the macro-molecules (protein, DNA, RNA) in the tissue.

    Learn More
  45. HOPE® Fixative System II

    HOPE® Fixative System II

    Starting at: $81.00

    HOPE® - Formalin-free fixation technique for molecular pathology and research!

    Tissue conservation using the new HOPE®-technique provides paraffin embedded tissue blocks with native structure of the macro-molecules (protein, DNA, RNA) in the tissue.

    Learn More