Fluorescent Dyes

Chemical dyes have been shown to be effective fluorescence tools in studying proteins, nucleic acids, lipid, carbohydrates, viruses, bacteria, cells, tissues, lymphokines, GPCRs, hormones and drugs.

  • Cyanine dyes can impart prominent fluorescence for detection and characterization of the study subjects. The sulfo cyanine series offer the benefit of being water-soluble with enhanced photostability and improved quantum yields. We also offer cyanine probes having reactive groups for direct bio-conjugations.
  • Fluorescein and Rhodamine dyes are widely used classic fluorescence tools. Fluorescein sodium salt, for example, has exhibited clinical indications in retinal demarcation. We also offer products having reactive groups for direct bio-conjugations.
  • Azo and Triphenylmethane dyes exhibit a plethora of applications ranging from pH indication, metal ions complexation and textile pigmentation, and they also play active roles in biological and histological staining studies.

  • Cyanine Fluorescent Dyes
  • Fluorescein & Rhodamine Dyes
  • Classic Azo and Triphenylmethane-type Dyes
  • Structure Details
    Product Name: 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt
    Order number: 50P101228
    CAS: 525-05-3
    Purity: >=95%
    Appearance: solid
    MF: C10H7NNa2O8S2
    MW: 379.265
    MP: >300 oC

    Description:
    This product is used to chelate and detect metals such as cobalt ion.
    Product Name: Ethyl Orange sodium salt
    Order number: 50P101369
    CAS: 62758-12-7
    Purity: >=95%
    Appearance: solid
    MF: C16H18N3NaO3S
    MW: 355.388
    MP: n.a. oC

    Description:
    Dyes with sulfonic acids tend to bind tightly to proteins and carbohydrates. They are generally "washable".
    Product Name: Thymol Blue (thymolsulfonephthalein)
    Order number: 50P142126
    CAS: 76-61-9
    Purity: >=95%
    Appearance: solid
    MF: C27H30O5S
    MW: 466.592
    MP: n.a. oC

    Description:
    This dye is a brownish-green or reddish-brown crystalline powder and is used as a pH indicator. It is used for the sensor of CO2 in the presence of Eu (III) judged by glow intensity.
    Product Name: 4-Dimethylaminoazobenzene-4'-carboxylic acid
    Order number: 50P122186
    CAS: 6268-49-1
    Purity: 97%
    Appearance: solid
    MF: C15H15N3O2
    MW: 269.304
    MP: n.a. oC

    Description:
    It is a dark fluorescence quencher. It is a popular acceptor for developing FRET-based nucleic acid probes such as Molecular Beacon-based PCR probes.
    Product Name: Neutral Red
    Order number: 50P124667
    CAS: 553-24-2
    Purity: 95%
    Appearance: solid
    MF: C15H17ClN4
    MW: 288.779
    MP: 290 oC

    Description:
    It stains lysosomes. It produces prominent fluorescence in plant and animal fats while acting as a stain for acidic groups including volutin. It has served as a CO2 sensor.
    Product Name: Orange IV (acid orange)
    Order number: 50P124966
    CAS: 554-73-4
    Purity: 95%
    Appearance: solid
    MF: C18H14N3NaO3S
    MW: 375.378
    MP: n.a. oC

    Description:
    It has found applications in sensors, lithographic plates, optical recording media, photoreceptor, inks, temperature indication, lubricants, textiles, and food storage.