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  4. Fluorescent Dye

Fluorescent Dye

Fluorescence is a phenomenon of photoluminescence in luminescence. When an atom is irradiated by light, some electrons around the nucleus jump from their original orbitals to higher energy orbitals under the influence of light energy, i.e., from the ground state to the first or second excited single-line state, etc. Due to the instability of the first or second excited singlet state, the electron returns from the excited singlet state to the ground state accompanied by released energy, resulting in fluorescence.

Fluorescent dyes can be covalently bound or physically adsorbed in the structure of the substance. The fluorescence properties allow for the characterization, localization and quantitative analysis of the labeled object. Fluorescent dyes have shown great potential for the detection of proteins, nucleic acids, cells, and immunoassays, attributed to the advantages in non-radioactive contamination, simple experimental operation and easy observation.

Fluorescent dyes have penetrated many fields such as pharmacology, physiology, environmental science, and information science, as well as functional studies of proteins and drug screening.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-141285
    TAMRA-PEG4-tetrazine
    TAMRA-PEG4-tetrazine is a dye derivative of TAMRA (HY-135640) containing 4 PEG units. TAMRA-PEG4-tetrazine contains a Tetrazine group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing TCO groups.
    TAMRA-PEG4-tetrazine
  • HY-147267D
    FAM labled Evazarsen sodium
    FAM labled Evazarsen sodiumis a FAM labled Evazarsen sodium.
    FAM labled Evazarsen sodium
  • HY-D2975
    TTVP
    TTVP is a high-performance, blood activated AIE near-infrared fluorescent probe. TTVP can display hemorrhagic areas in the mouse brain with ultra sensitivity and high contrast specificity. TTVP provides a visual assessment tool for the study of hemorrhagic conditions.
    TTVP
  • HY-D2011
    ATTO 565 hydrazid
    ATTO 565 hydrazid is a hydrazide derivative of ATTO 565 with maximum excitation/emission wavelengths: 564/590 nm.
    ATTO 565 hydrazid
  • HY-D2144
    Cy5-PEG7-TCO
    Cy5-PEG7-TCO is a dye derivative of Cyanine 5 (Cy5) (HY-D0821) containing 7 PEG units. Cy5-PEG7-TCO utilizes its own TCO group to undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules bearing Tetrazine groups.
    Cy5-PEG7-TCO
  • HY-D0023A
    Pyranine hydrate
    Pyranine (HPTS; Solvent Green 7) hydrate is a cell-impermeant pH-sensitive fluorescent indicator. Pyranine hydrate acts as a class of fluorescent chemosensor for the Cu+ ion. Pyranine hydrate is used as a coloring agent, biological stain, optical detecting reagent, and pH indicator (Ex/Em = 450/510 nm).
    Pyranine hydrate
  • HY-P2651
    Dansyl-D-Ala-Gly-Phe(pNO2)-Gly
    Dansyl-D-Ala-Gly-Phe(pNO2)-Gly is a synthetic peptide substrate. As a substrate of NEP, Dansyl-D-Ala-Gly-Phe(pNO2)-Gly can be specifically recognized and cleaved by the enzyme, thereby releasing the fluorophore dansyl, which can be quantitatively detected. Therefore, it is often used to determine the activity of NEP.
    Dansyl-D-Ala-Gly-Phe(pNO2)-Gly
  • HY-D2021
    ATTO 550 maleimide
    ATTO 550 maleimide is a new fluorescent marker based on the Rhodamine structure. It has strong absorption, high fluorescence quantum yield, high thermal stability and photochemical stability, and is suitable for single molecule detection and high-resolution microscopy. ATTO 550 maleimide is a maleimide derivative of ATTO 550, which can be used to label proteins or antibodies.
    ATTO 550 maleimide
  • HY-D2091
    PE-VF647 Maleimide
    PE-VF647 Maleimide is a double-dye dye that can undergo thiol reaction. It contains maleimide groups that can react with thiol groups to form covalent bonds. PE-VF647 Maleimide contains two dyes, PE and VF, with excitation wavelengths (Ex) of 495 nm and 566 nm, respectively. PE-VF594 Maleimide has an emission wavelength (Em) of 665 nm.
    PE-VF647 Maleimide
  • HY-D3038
    Rhodamine B-Heparin
    Rhodamine B-Heparin is a Rhodamine B (HY-Y0016)-labeled heparin. Rhodamine B-Heparin is widely used in fluorescent labeling, molecular tracking, and visualization studies (Ex/Em = 546/610 nm).
    Rhodamine B-Heparin
  • HY-W099490
    Bis[3,4,6-trichloro-2-(pentyloxycarbonyl)phenyl] oxalate
    Bis[3,4,6-trichloro-2-(pentyloxycarbonyl)phenyl] oxalate is a fluorescent dye that can be used for generation of chemiluminescence.
    Bis[3,4,6-trichloro-2-(pentyloxycarbonyl)phenyl] oxalate
  • HY-D2886E
    RB-PEG5000-N3
    RB-PEG5000-N3 (Rhodamine B-PEG5000-N3) is a fluorescent dye composed of Rhodamine B (HY-Y0016), PEG and azide group (N3). RB-PEG5000-N3 is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups (Ex/Em=546/610 nm).
    RB-PEG5000-N3
  • HY-179073A
    TRITC-Polysucrose 40
    TRITC-Polysucrose 40 is TRITC-labeled Polysucrose 40 (HY-131960C). Polysucrose 40 is a copolymer of sucrose and epichlorohydrin. Polysucrose 40 can be used to prepare cross-linked polysucrose microspheres. TRITC-Polysucrose 40 is mainly used for permeability and microcirculation studies (Ex/Em = 544/570 nm).
    TRITC-Polysucrose 40
  • HY-D2287A
    CalFluor 555 azide chloride
    CalFluor 555 azide (chloride) is a fluorogenic azide probe. CalFluor 555 azide (chloride) is not fluorescent until it is reacted with alkynes (Ex=555 nm).
    CalFluor 555 azide chloride
  • HY-D2163
    AF 430 amine
    AF 430 amine is a derivative of the yellow fluorescent dye AF 430. AF430 has an excitation wavelength of 425 nm and an emission wavelength of 542 nm. AF 430 amine can form covalent bonds through a condensation reaction between amino groups and molecules containing carboxyl groups. To achieve specific coupling of dye labels and biomolecules.
    AF 430 amine
  • HY-133532
    PB succiniMidyl ester
    PB succiniMidyl ester (Ocean Blue, SE) is a fluorophore with the λexcitation/emission of ~405/455 nm.
    PB succiniMidyl ester
  • HY-D2039
    ATTO 550 cadaverin
    ATTO 550 cadaverin is a cadaverine derivative of ATTO 550, used for carboxylic acid, aldehyde and ketone reactions, maximum excitation/emission wavelength: 554/576 nm.
    ATTO 550 cadaverin
  • HY-D3213
    Mem-Cu(II)
    Mem-Cu (II) is a cell membrane-targeted divalent copper ion (Cu2+) probe.
    Mem-Cu(II)
  • HY-D3243
    Mn1
    Mn1 (M1) is a BODIPY-based Mn2+-selective "turn-on" Fluorescent sensor and fluorescence modulator. In the absence of Mn2+, Mn1 undergoes fluorescence quenching via photoinduced electron transfer; binding to Mn2+ inhibits this mechanism, thereby generating a fluorescence "turn-on" response. Mn1 exhibits Mn2+-specific cellular fluorescence response.
    Mn1
  • HY-D2520
    Cy3-PEG5000-biotin
    Cy3-PEG5000-biotin is a polyethylene glycol derivative containing Cy3 (HY-D0822) fluorescent dye and polyethylene glycol (PEG) and a Biotin. Biotin can bind with high affinity to streptavidin or avidin. Cy3-PEG5000-biotin plays an important role in the specific capture and detection of biomolecules.
    Cy3-PEG5000-biotin
Cat. No. Product Name / Synonyms Application Reactivity