sulfo-Cyanine5.5 NHS ester

NHS esters sulfo-Cyanine5.5 Protein labeling

Cat. #	Quantity	Price	Lead time
17320	1 mg	$125	in stock
27320	5 mg	$325	in stock
47320	25 mg	$850	in stock
57320	50 mg	$1490	in stock
67320	100 mg	$1990	in stock

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sulfo-Cyanine5.5 NHS ester is an amine-reactive activated ester of sulfonated far-red Cyanine5.5 fluorophore, an analog of Cy5.5®. This is a reagent of choice for the labeling of antibodies, sensitive proteins, and others which require reactions in a purely aqueous environment or without any significant additions of organic co-solvents.

The dye is well-suitable for non-invasive in vivo NIR imaging and applications requiring low fluorescent background.

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Absorption and emission spectra of sulfo-Cyanine5.5

General properties

Appearance:	dark blue solid
Mass spec M+ increment:	884.15
Molecular weight:	1114.37
CAS number:	2419286-92-1
Molecular formula:	C₄₄H₄₂N₃K₃O₁₆S₄
Solubility:	good in water, DMF, DMSO
Quality control:	NMR ¹H, HPLC-MS (95%)
Storage conditions:	Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS:	Download
	Product specifications

Spectral properties

Excitation/absorption maximum, nm:	675
ε, L⋅mol⁻¹⋅cm⁻¹:	211000
Emission maximum, nm:	694
Fluorescence quantum yield:	0.21
CF₂₆₀:	0.09
CF₂₈₀:	0.11

Product citations

Zhang, B.; Pan, H.; Chen, Z.; Yin, T.; Zheng, M.; Cai, L. Twin-Bioengine Self-Adaptive Micro/Nanorobots Using Enzyme Actuation and Macrophage Relay for Gastrointestinal Inflammation Therapy. Sci. Adv., 2023, 9(8), eadc8978. doi: 10.1126/sciadv.adc8978
Shevchuk, A. I.; Svinko, V. O.; Smirnov, A. N.; Solovyeva, E. V. SERS Study of Cyanine Dyes: Optimization of Metal Core and Molecular Label Choice for Plasmonic Nanotags. Dyes and Pigments, 2023, 216, 111329. doi: 10.1016/j.dyepig.2023.111329.
Svinko, V. O.; Smirnov, A. N.; Shevchuk, A. I.; Demenshin, A. I.; Smirnov, A. A.; Solovyeva, E. V. Comparative Study of Fluorescence Core-Shell Nanotags with Different Morphology of Gold Core. Colloids and Surfaces B: Biointerfaces, 2023, 226, 113306. doi: 10.1016/j.colsurfb.2023.113306
Tsai, H.-Y.; Robidillo, C. J. T.; Matharu, G. K.; O’Connor, K.; Cheong, I. T.; Ni, C.; Veinot, J. G. C.; Algar, W. R. Spectrotemporal Characterization of Photoluminescent Silicon Nanocrystals and Their Energy Transfer to Dyes. Nanoscale, 2023, 15(30), 12492–12505. doi: 10.1039/D3NR02461J

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Cy® is a trademark of GE Healthcare.

This Product is offered and sold for research purposes only. It has not been tested for safety and efficacy in food, drug, medical device, cosmetic, commercial or any other use. Supply does not express or imply authorization to use for any other purpose, including, without limitation, in vitro diagnostic purposes, in the manufacture of food or pharmaceutical products, in medical devices or in cosmetic products.