2. Fluorescent Dye
  3. Labeling Chemistry
  4. Functional Group Type
  5. Fluorescein Dyes

Fluorescein Dyes

Fluorescein Dyes (53):

Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-66019
    FITC 3326-32-7 98.60%
    FITC (Fluorescein Isothiocyanate), is one of the green fluorescein derivatives widely used in biology. FITC has the characteristics of high absorptivity and excellent fluorescence quantum yield. The isothiocyanate group of FITC can be combined with amino, sulfhydryl, imidazole, tyrosyl, carbonyl and other groups on the protein, so as to achieve protein labeling including antibodies and lectins. In addition to its use as a protein marker, FITC can also be used as a fluorescent protein tracer to rapidly identify pathogens by labeling antibodies, or for microsequencing of proteins and peptides (HPLC). The maximum excitation wavelength of FITC is 494 nm. Once excited, it fluoresces yellow-green at a maximum emission wavelength of 520 nm. In addition, FITC is also a hapten that can induce contact hypersensitivity (CHS) and induce an atopic dermatitis model.
    FITC
  • HY-D0098
    Fluorescein-5-maleimide 75350-46-8 99.05%
    Fluorescein-5-maleimide (N-(5-Fluoresceinyl)maleimide) is a fluorescent dye. Fluorescein-5-maleimide can be used to detect the redox state of thiols in eukaryotic cells. Fluorescein-5-maleimide can label peptides and is used to detect negatively charged nanoparticles. Fluorescein-5-maleimide can also label actin to explore its interaction with cardiac myosin-binding protein C (cMyBP-C), which helps in developing small molecule modulators for heart failure. Fluorescein-5-maleimide can screen mutant proteins that contain cysteine residues. The excitation wavelength of Fluorescein-5-maleimide is 494 nm, and the emission wavelength is 519 nm.
    Fluorescein-5-maleimide
  • HY-D0208
    Fluorescein sodium 518-47-8
    Fluorescein (Uranine) sodium is widely used as a fluorescent tracer in medicinal and biological applications and tumor infected tissues tracer. Fluorescein (Uranine) sodium is a representative green fluorophore that has been widely used as a scaffold of practically useful green fluorescent probes.
    Fluorescein sodium
  • HY-D0251
    Fluorescein 2321-07-5 98.47%
    Fluorescein (Uranine) is widely used as a fluorescent tracer in medicinal and biological applications and tumor infected tissues tracer. Fluorescein (Uranine) is a representative green fluorophore that has been widely used as a scaffold of practically useful green fluorescent probes.
    Fluorescein
  • HY-66022
    5-FAM 76823-03-5 99.56%
    5-FAM (5-Carboxyfluorescein) is a green fluorescent reagent used for in situ labeling peptides, proteins and nucleotides. 5-FAM is a single isomer with Ex/Em of 490 nm/520 nm.
    5-FAM
  • HY-D2348A
    ACE TFA 99.47%
    ACE TFA is a non-GFP fluorescent dye. ACE TFA can be conjugated with fluorescent RNA aptamers for RNA visualization studies in living cells.
    ACE TFA
  • HY-158779
    Sulfane sulfur probe 4 1810731-98-6
    Sulfane sulfur probe 4 (SSP4) is a fluorescent probe used to detect sulfane sulfur species (Ex/Em=494/515 nm). Sulfane sulfur probe 4 exhibits high sensitivity in detecting sulfane sulfur, even in the presence of other substances such as homocysteine, methionine, cysteine, glutathione, N-acetyl-L-cysteine, glycine, tyrosine, tryptophan, arginine, and metal ions (Fe2+, Fe3+, Mg2+, Ca2+, and Zn2+).
    Sulfane sulfur probe 4
  • HY-W923645
    Fluorescein O,O′-diacrylate 7262-39-7
    Fluorescein O,O′-diacrylate (Diacryloyloxyfluorescein) is a fluorescent compound with good biocompatibility and cell labeling ability. Fluorescein O,O′-diacrylate is often used in biological imaging and cell tracking research, and can effectively label cells and track their dynamic changes in vivo. Fluorescein O,O′-diacrylate is also used in compound delivery systems to improve the localization accuracy and inhibitory effect of compounds. Fluorescein O,O′-diacrylate is also used to prepare polymer materials to enhance their optical properties and biological interactions.
    Fluorescein O,O′-diacrylate
  • HY-15941
    5(6)-FITC 27072-45-3
    5(6)-FITC (Fluorescein 5(6)-isothiocyanate) is an amine-reactive derivative of a fluorescent dye, characterized by high absorbance and excellent fluorescence quantum yield. The isothiocyanate group of FITC can react with various functional groups on proteins, including amines, thiols, imidazoles, tyrosines and carbonyls, enabling the labeling of proteins such as antibodies and lectins. 5(6)-FITC has a wide range of applications, including flow cytometry, immunofluorescence, protease assays and conjugation. The maximum excitation/emission wavelengths are 492/518 nm.
    5(6)-FITC
  • HY-D0047
    5-CFDA 79955-27-4 98.22%
    5-CFDA is a common aliphatic luciferin-line organism. CFDA conducts free diffusion into cells, and then it is hydrolyzed into carboxyl fluorescein (CF) by intracellular non-specific lipase. CF containing portion contains an additional negative charge so that it is better retained in cells, compared to fluorescein dyes.
    5-CFDA
  • HY-D1082
    5-DTAF 51306-35-5
    5-DTAF is a isomeric fluorescein derivative that directly react with polysaccharides and other alcohols in aqueous solution at pH ＞ 9. The maximum of the 5-DTAF emission profile is at a wavelength of 518 nm after excitation at 488 nm.
    5-DTAF
  • HY-15938
    5-FAM SE 92557-80-7 98.64%
    5-FAM SE is a single isomer, is a fluorescent labeling reagent used for labeling peptides, proteins and nucleotides. 5-FAM SE can react with amines and can yield stable amine conjugates.
    5-FAM SE
  • HY-15939
    6-FAM SE 92557-81-8
    6-FAM SE is another isomer of carboxyfluorescein.
    6-FAM SE
  • HY-131008
    Fluorescein tyramide 210236-90-1 ≥99.0%
    Fluorescein tyramide is a green fluorescent reagent (λabs: 494 nm; λem: 517 nm). Fluorescein tyramide is widely used for tyramide signal amplification (TSA) with a low-abundance in IHC, ICC, in situ hybridization (FISH) and flow cytometry (FCM) applications.
    Fluorescein tyramide
  • HY-D0099
    Fluorescein-5-thiosemicarbazide 76863-28-0
    Fluorescein-5-thiosemicarbazide is a amine containing fluorescent probe that can be used for labeling saccharides and protein carbonyl derivatives.
    Fluorescein-5-thiosemicarbazide
  • HY-D1732
    FITC-hyodeoxycholic acid 2374144-21-3 98.94%
    FITC-hyodeoxycholic acid is a hyodeoxycholic acid labeled with FITC, which can be used to study the mechanism of action of hyodeoxycholic acid.
    FITC-hyodeoxycholic acid
  • HY-136957
    Fluorescein-6-isothiocyanate 18861-78-4 98.03%
    Fluorescein-6-isothiocyanate is a fluorescent isomeric haptenic probes with Kds of 8.74, 2.72 and 1.88 for N-Acetyl-L-Lysine, normal mouse IgG and 4-4-20, respectively.
    Fluorescein-6-isothiocyanate
  • HY-D2277
    Fluorescein-CM2 1394821-44-3 99.28%
    Fluorescein-CM2 is a fluorogenic molecule that can be used to rapidly screen esterase cut sites for protein-protein interaction-dependent (PPI-dependent) esterase activity in E. coli.
    Fluorescein-CM2
  • HY-155640
    5-FAM maleimide 787632-00-2 98.54%
    5-FAM maleimide is a 5-FAM (HY-66022) derivative. 5-FAM maleimide can be used to label proteins.
    5-FAM maleimide
  • HY-113238F
    FITC-Lithocholic acid 3-sulfate
    FITC-Lithocholic acid 3-sulfate (FITC-Sulfolithocholic acid) is a FITC-labeled Lithocholic acid 3-sulfate, which is a sulfated biliary metabolite. Lithocholic acid 3-sulfate selectively inhibits Th17 cell differentiation by targeting RORγt. Lithocholic acid 3-sulfate can be used for the research of pathogenesis of cholestatic liver diseases.
    FITC-Lithocholic acid 3-sulfate