Name: Cyanine 3 monosuccinimidyl ester, potassium salt [same as GE Cy3® NHS ester]
Brand: AAT Bioquest
SKU: 271
Price: 115 USD
Availability: InStock

Cyanine 3 monosuccinimidyl ester, potassium salt

same as GE Cy3® NHS ester

This Cy3® dye is the same molecule to GE's Cy3® NHS ester. Cy3® NHS ester readily reacts with amino groups. A variety of cyanine 3 (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. Cy3® dyes have enhanced fluorescence upon binding to proteins. Cy3® is the trademark of GE Healthcare.

HeLa cells were incubated with (Tubulin+) or without (Tubulin-) mouse anti-tubulin followed by AAT’s Cy3<sup>®</sup> goat anti-mouse IgG conjugate (Red, Left) or Jackson’s goat anti-mouse IgG conjugated with Cy3<sup>®</sup>  (Red, Right), respectively. Cell nuclei were stained with Hoechst 33342 (Blue, Cat# 17530).

Protocol

SDS

COA

Catalog	Size	Price	Quantity
271	1 mg	Price

Citations

View all 21 citations: Citation Explorer

LLPS of FXR proteins drives replication organelle clustering for $\beta$-coronaviral proliferation

Authors:

Li, Meng and Hou, Yali and Zhou, Yuzheng and Yang, Zhenni and Zhao, Hongyu and Jian, Tao and Yu, Qianxi and Zeng, Fuxing and Liu, Xiaotian and Zhang, Zheng and others,

Journal:

Journal of Cell Biology (2024)

Competitive binding-mediated mesoscale protein-protein interactions direct microtubule growth

Authors:

Wei, Zhiyi and Jia, Xuanyan and Lin, Leishu and Guo, Siqi and Zhou, Lulu and Jin, Gaowei and Dong, Jiayuan and Xiao, Jinman and Xie, Xingqiao and Li, Yiming and others,

An ULK1/2-PXN mechanotransduction complex suppresses breast cancer cell migration

Authors:

Liang, Peigang and Zhang, Jiaqi and Wu, Yuchen and Zheng, Shanyuan and Xu, Zhaopeng and Yang, Shuo and Wang, Jinfang and Ma, Suibin and Xiao, Li and Wu, Tianhui and others,

Journal:

bioRxiv (2023): 2023--02

A liquid-to-solid phase transition of Cu/Zn superoxide dismutase 1 (SOD1) initiated by oxidation and disease mutation

Authors:

Gu, Siyu and Xu, Ming and Chen, Long and Shi, Xiangyan and Luo, Shi-Zhong

Journal:

Journal of Biological Chemistry (2022): 102857

Promotion of row 1--specific tip complex condensates by Gpsm2-G$\alpha$i provides insights into row identity of the tallest stereocilia

Authors:

Shi, Yingdong and Lin, Lin and Wang, Chao and Zhu, Jinwei

Journal:

Science Advances (2022): eabn4556

References

View all 21 references: Citation Explorer

Excitation of Cy5 in self-assembled lipid bilayers using optical microresonators

Authors:

Freeman LM, Li S, Dayani Y, Choi HS, Malmstadt N, Armani AM.

Journal:

Appl Phys Lett (2011): 143703

Theranostic cRGD-BioShuttle Constructs Containing Temozolomide- and Cy7 For NIR-Imaging and Therapy

Authors:

Wiessler M, Hennrich U, Pipkorn R, Waldeck W, Cao L, Peter J, Ehemann V, Semmler W, Lammers T, Braun K.

Journal:

Theranostics (2011): 381

Rational approach to select small peptide molecular probes labeled with fluorescent cyanine dyes for in vivo optical imaging

Authors:

Berezin MY, Guo K, Akers W, Livingston J, Solomon M, Lee H, Liang K, Agee A, Achilefu S.

Journal:

Biochemistry (2011): 2691

In vivo detection of embryonic stem cell-derived cardiovascular progenitor cells using Cy3-labeled Gadofluorine M in murine myocardium

Authors:

Adler ED, Bystrup A, Briley-Saebo KC, Mani V, Young W, Giovanonne S, Altman P, Kattman SJ, Frank JA, Weinmann HJ, Keller GM, Fayad ZA.

Journal:

JACC Cardiovasc Imaging (2009): 1114

Quantitative proteomics by fluorescent labeling of cysteine residues using a set of two cyanine-based or three rhodamine-based dyes

Authors:

Volke D, Hoffmann R.

Journal:

Electrophoresis (2008): 4516

Physical properties

Molecular weight	765.93
Solvent	DMSO

Spectral properties

Correction factor (260 nm)	0.07
Correction factor (280 nm)	0.073
Extinction coefficient (cm ^-1 M ^-1)	150000 ¹
Excitation (nm)	555
Emission (nm)	569
Quantum yield	0.15 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
CAS	146368-16-3

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Page updated on September 29, 2025