sulfo-Cyanine7.5 NHS ester

NHS esters Protein labeling Near infrared (NIR) imaging sulfo-Cyanine7.5

Cat. #	Quantity	Price	Lead time
16320	1 mg	$125	in stock
26320	5 mg	$325	in stock
46320	25 mg	$850	in stock
56320	50 mg	$1490	in stock
66320	100 mg	$1990	in stock

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sulfo-Cyanine7.5 is a near-infrared water-soluble and hydrophilic dye for the NIR imaging applications. The structure and spectra of the dye resemble indocyanine green (ICG) which has been approved for use in humans for years. However, unlike ICG, sulfo-Cyanine7.5 contains a trimethylene bridge that increases its quantum yield compared to ICG and has a linker arm for its attachment to proteins, peptides, and other molecules. This derivative is an NHS ester for the modification of amine groups.

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Absorption and emission spectra of sulfo-Cyanine7.5

General properties

Appearance:	dark green solid
Mass spec M+ increment:	950.2
Molecular weight:	1180.47
Molecular formula:	C₄₉H₄₈N₃K₃O₁₆S₄
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:	778
ε, L⋅mol⁻¹⋅cm⁻¹:	222000
Emission maximum, nm:	797
Fluorescence quantum yield:	0.21
CF₂₆₀:	0.09
CF₂₈₀:	0.09

Product citations

Musicò, A.; Zenatelli, R.; Romano, M.; Zendrini, A.; Alacqua, S.; Tassoni, S.; Paolini, L.; Urbinati, C.; Rusnati, M.; Bergese, P.; Pomarico, G.; Radeghieri, A. Assessing the Effect of Protein Corona Formation in the Process of EV Surface Engineering. ChemRxiv, 2023, preprint. doi: 10.26434/chemrxiv-2023-rh5s8
Khadria, A.; Paavola, C.D.; Maslov, K.; Brown-Augsburger, P.L.; Grealish, P.F.; Lozano, E.; Blankenship, R.L.; Cao, R.; Shi, J.; Beals, J.M.; Oladipupo, S.S.; Wang, L.V. Photoacoustic imaging of the dynamics of a dye-labeled IgG4 monoclonal antibody in subcutaneous tissue reveals a transient decrease in murine blood oxygenation under anesthesia. Journal of Biomedical Optics, 2023, 28(11), 116002. doi: 10.1117/1.jbo.28.11.116002
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.
Musicò, A.; Zenatelli, R.; Romano, M.; Zendrini, A.; Alacqua, S.; Tassoni, S.; Paolini, L.; Urbinati, C.; Rusnati, M.; Bergese, P.; Pomarico, G.; Radeghieri, A. Surface functionalization of extracellular vesicle nanoparticles with antibodies: a first study on the protein corona “variable” † † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d3na00280b. Nanoscale Advances, 2023, 5(18), 4703-4717. doi: 10.1039/d3na00280b