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Cyanine 5 monoacid [equivalent to Cy5® acid]

A variety of cyanine 5 ( Cy5®) 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. Cy5® dyes are one type of the most common red fluorophores. These versatile fluorophores can tolerate a pH range of 3-10 for use in a variety of applications at biologically relevant pHs. The dyes are also DMSO tolerant and photostable to enable transfer from storage to assay without loss of performance. The aqueous solubility eliminates the need for organic solvents in the assay buffers. Our Cy5® Fluors are thoroughly QC tested to ensure high levels of chromophore and reactive dye content. Mono-reactive dyes are suitable for targeted, precise labeling of proteins and oligonucleotides and bis-reactive dyes are more suitable for general labeling. NHS ester dyes are recommended for labeling amine groups and maleimide dyes are recommended for labeling thiol groups. Cy5® is the trademark of GE Healthcare.

Calculators

Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of Cyanine 5 monoacid [equivalent to Cy5® acid] to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

0.1 mg0.5 mg1 mg5 mg10 mg
1 mM129.73 µL648.651 µL1.297 mL6.487 mL12.973 mL
5 mM25.946 µL129.73 µL259.461 µL1.297 mL2.595 mL
10 mM12.973 µL64.865 µL129.73 µL648.651 µL1.297 mL

Molarity calculator

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Spectrum

Product family

NameExcitation (nm)Emission (nm)Extinction coefficient (cm -1 M -1)Quantum yieldCorrection Factor (260 nm)Correction Factor (280 nm)Correction Factor (482 nm)Correction Factor (565 nm)
Cyanine 3 monoacid [equivalent to Cy3® acid]55556915000010.1510.070.073--
Cyanine 5 maleimide [equivalent to Cy5® maleimide]65167025000010.271, 0.420.020.030.0090.09
Cyanine 5 azide [equivalent to Cy5® azide]65167025000010.271, 0.420.020.030.0090.09
Cyanine 5 alkyne [equivalent to Cy5® alkyne]65167025000010.271, 0.420.020.030.0090.09
Cyanine 5 amine [equivalent to Cy5® amine]65167025000010.271, 0.420.020.030.0090.09
Cyanine 5 hydrazide [equivalent to Cy5® hydrazide]65167025000010.271, 0.420.020.030.0090.09
Cyanine 7 monoacid [equivalent to Cy7® acid]7567792500000.30.050.0360.00050.0193
Cyanine 5 bisacid [equivalent to Cy5® bisacid]65167025000010.271, 0.420.020.030.0090.09
Cyanine-5- dUTP [Cy5-dUTP] *1 mM in TE Buffer (pH 7.5)*65167025000010.271, 0.420.020.030.0090.09
Cyanine 5-dATP [Cy5-dATP] *1 mM in TE Buffer (pH 7.5)*65167025000010.271, 0.420.020.030.0090.09
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Citations

View all 13 citations: Citation Explorer
Thermo-sensitive hydrogel PLGA-PEG-PLGA as a vaccine delivery system for intramuscular immunization
Authors: Wang, Xiaoyan and Zhang, Yu and Xue, Wei and Wang, Hong and Qiu, Xiaozhong and Liu, Zonghua
Journal: Journal of Biomaterials Applications (2017): 923--932
Cube-shaped theranostic paclitaxel prodrug nanocrystals with surface functionalization of SPC and MPEG-DSPE for imaging and chemotherapy
Authors: Guo, Fuqiang and Shang, Jiajia and Zhao, Hai and Lai, Kangrong and Li, Yang and Fan, Zhongxiong and Hou, Zhenqing and Su, Guanghao
Journal: Colloids and Surfaces B: Biointerfaces (2017)
Light/magnetic hyperthermia triggered drug released from multi-functional thermo-sensitive magnetoliposomes for precise cancer synergetic theranostics
Authors: Guo, Yuxin and Zhang, Yang and Ma, Jinyuan and Li, Qi and Li, Yang and Zhou, Xinyi and Zhao, Dan and Song, Hua and Chen, Qing and Zhu, Xuan
Journal: Journal of Controlled Release (2017)
Molecular Basis and Consequences of the Cytochrome c-tRNA Interaction
Authors: Liu, Cuiping and Stonestrom, Aaron J and Christian, Thomas and Yong, Jeongsik and Takase, Ryuichi and Hou, Ya-Ming and Yang, Xiaolu
Journal: Journal of Biological Chemistry (2016): 10426--10436
Click-electron microscopy for imaging metabolically tagged nonprotein biomolecules
Authors: Ngo, John T and Adams, Stephen R and Deerinck, Thomas J and Boassa, Daniela and Rodriguez-Rivera, Frances and Palida, Sakina F and Bertozzi, Carolyn R and Ellisman, Mark H and Tsien, Roger Y
Journal: Nat Chem Biol (2016): 459--465

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
Page updated on December 11, 2024

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Physical properties

Molecular weight

770.83

Solvent

DMSO

Spectral properties

Correction Factor (260 nm)

0.02

Correction Factor (280 nm)

0.03

Correction Factor (482 nm)

0.009

Correction Factor (565 nm)

0.09

Extinction coefficient (cm -1 M -1)

2500001

Excitation (nm)

651

Emission (nm)

670

Quantum yield

0.271, 0.42

Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22

Storage

Freeze (< -15 °C); Minimize light exposure
UNSPSC12171501

CAS

146368-11-8
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