Name: Cy3B azide
Brand: AAT Bioquest
SKU: 943
Price: 430 USD
Availability: InStock

Cy3B azide

Cy3® dye is one of the most common cyanine dyes used for labeling proteins, nucleic acids and other biological molecules. A variety of Cy3® dyes has been used to label biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis. They are widely used for labeling peptides, proteins and oligos etc. However, Cy3 suffers low fluorescence intensity. It is the least fluorescent dyes among all the Cy dyes. Cy3B is an improved version of Cy3 dyes with significantly increased fluorescence quantum yield and photostability. Cy3B azide can be used for conjugations with alkyne-containing biological molecules. Cy3® is the trademark of GE Healthcare.

Protocol

SDS

COA

Catalog	Size	Price	Quantity
943	1 mg	Price

References

View all 37 references: Citation Explorer

Fluorescence Anisotropy-Based Assay for Characterization of Ligand Binding Dynamics to GPCRs: The Case of Cy3B-Labeled Ligands Binding to MC4 Receptors in Budded Baculoviruses.

Authors:

Veiksina, Santa and Tahk, Maris-Johanna and Laasfeld, Tõnis and Link, Reet and Kopanchuk, Sergei and Rinken, Ago

Journal:

Methods in molecular biology (Clifton, N.J.) (2021): 119-136

Quantitative analysis of fluorescent ligand binding to dopamine D3 receptors using live-cell microscopy.

Authors:

Allikalt, Anni and Laasfeld, Tõnis and Ilisson, Mihkel and Kopanchuk, Sergei and Rinken, Ago

Journal:

The FEBS journal (2021): 1514-1532

Fluorescent ligands for dopamine D2/D3 receptors.

Authors:

Allikalt, Anni and Purkayastha, Nirupam and Flad, Khajidmaa and Schmidt, Maximilian F and Tabor, Alina and Gmeiner, Peter and Hübner, Harald and Weikert, Dorothee

Journal:

Scientific reports (2020): 21842

Unifying Mechanism for Thiol-Induced Photoswitching and Photostability of Cyanine Dyes.

Authors:

Gidi, Yasser and Payne, Liam and Glembockyte, Viktorija and Michie, Megan S and Schnermann, Martin J and Cosa, Gonzalo

Journal:

Journal of the American Chemical Society (2020): 12681-12689

Fluorescence lifetime imaging with a single-photon SPAD array using long overlapping gates: an experimental and theoretical study.

Authors:

Ardelean, Andrei and Ulku, Arin Can and Michalet, Xavier and Charbon, Edoardo and Bruschini, Claudio

Journal:

Proceedings of SPIE--the International Society for Optical Engineering (2019)

Physical properties

Molecular weight	684.86
Solvent	DMSO

Spectral properties

Correction factor (260 nm)	0.048
Correction factor (280 nm)	0.069
Extinction coefficient (cm ^-1 M ^-1)	120000 ¹
Excitation (nm)	560
Emission (nm)	571
Quantum yield	0.58 ¹

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22
Storage	Freeze (< -15 °C); Minimize light exposure
UNSPSC	12171501

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Page updated on September 29, 2025