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Reactive Fluorescent Dyes

Achieve precise, stable labeling of antibodies, proteins, nucleic acids, and more with superior CF® Dyes, reactive dyes, and efficient biotinylation reagents. With fluorescent dyes delivering exceptional brightness across the visible to near-IR spectra and selective biotinylation tools enabling diverse biomolecule detection, create high-performance tools for flow cytometry, ELISA, and beyond.

Related Solutions

Amine-Reactive Dyes

Label proteins, antibodies, oligonucleotides, and nucleic acids efficiently with succinimidyl ester (SE) dyes, including 40+ bright, photostable CF® Dyes.

Azide, Alkyne, BCN, Tetrazine & TCO

Pair your choice of bioorthogonal functional groups with superior CF® Dyes or biotin, available with copper-catalyzed and copper-free click chemistry labeling options.

Biotinylation Reagents

Choose from biotin reagents with diverse functionalized reactive groups for efficient biotinylation and precise cytoplasmic or neuronal tracing.

Dyes For Labeling Carbonyls & Carbohydrates

Achieve efficient cell tracing and robust labeling of carbonyls and carbohydrates with a wide selection of classic dyes and CF® Dyes in aminooxy and hydrazide forms.

Dyes with an Amine Group

Track biological molecules and neuronal connectivity with amine-functionalized fluorescent dyes, ideal for conjugation, neuronal tracing, and gap junction studies.

Free Dyes

Optimize assay conditions and ensure experimental accuracy with non-reactive, free acid forms of CF® Dyes and classic dyes, including unique near-IR options.

Thiol-Reactive Dyes

Enable precise thiol group labeling with reactive fluorescent dyes, including CF® Dye Maleimides and MTS, offered in a wide range of bright, photostable colors.

Tyramides & Tyramide Signal Amplification Kits

Boost immunofluorescence sensitivity with HRP-catalyzed tyramide signal amplification featuring next-generation fluorescent CF® Dyes or biotin.

Product Spotlight

Technology Highlight

Brighter Dyes. Bolder Discoveries.

Experience superior, photostable labeling with CF® Dyes—engineered for unmatched brightness, versatility, and performance across applications.

  • Over 40 CF® Dyes across the visible, far-red & near-IR spectra—find your best fit
  • Developed in-house by industry-leading chemists, CF® Dyes outshine alternatives
  • Available as antibodies, conjugates, reactive dyes, and easy-to-use labeling kits
  • Supporting IF and super-resolution microscopy, flow cytometry, and more
rat optic nerve stained with mouse anti-neurofilament H and CF568 goat anti-mouserat optic nerve stained with mouse anti-neurofilament H and CF568 goat anti-mouse

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