Cyanine5.5 NHS ester

Cyanine5.5 NHS esters Protein labeling

Cat. #	Quantity	Price	Lead time
17020	1 mg	$125	in stock
27020	5 mg	$260	in stock
47020	25 mg	$510	in stock
57020	50 mg	$895	in stock
67020	100 mg	$1490	in stock

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Cyanine5.5 NHS ester is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides, an analog of Cy5.5® NHS ester.

Cy5.5 is a far-red (and near-infrared) emitting dye which is ideal for fluorescence measurements where background fluorescence is a concern. It is also suitable for in vivo NIR imaging experiments.

This reagent can replace NHS esters of Cy5.5® and DyLight 680.

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Cy5.5 absorbance and emission spectra

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Cyanine7.5 carboxylic acid

Cyanine7.5 carboxylic acid - unactivated NIR cyanine dye carboxylic acid.

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General properties

Appearance:	dark blue to violet solid
Molecular weight:	767.66
CAS number:	2375105-86-3
Molecular formula:	C₄₄H₄₆N₃BF₄O₄
IUPAC name:	1H-Benz[e]indolium, 2-[5-(1,3-dihydro-1,1,3-trimethyl-2H-benz[e]indol-2-ylidene)-1,3-pentadien-1-yl]-3-[6-[(2,5-dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]-1,1-dimethyl-
Solubility:	soluble in organic solvents (DMSO, DMF, dichloromethane), practically insoluble in water (< 1 uM, < 1 mg/L)
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:	684
ε, L⋅mol⁻¹⋅cm⁻¹:	198000
Emission maximum, nm:	710
Fluorescence quantum yield:	0.2
CF₂₆₀:	0.07
CF₂₈₀:	0.03

Product citations

Yun, W.S.; Yang, W.; Shim, M.K.; Song, S.; Choi, J.; Kim, J.; Kim, J.; Moon, Y.; Jo, S.H.; Lim, D.-K.; Kim, K. Accurately controlled tumor temperature with silica-coated gold nanorods for optimal immune checkpoint blockade therapy. Biomaterials Research, 2024, 28, 0024. doi: 10.34133/bmr.0024
Liu, Q.; Wang, C.; Zhu, M.; Liu, J.; Duan, Q.; Midgley, A.C.; Liu, R.; Jiang, B.; Kong, D.; Chen, Q.; Zhuang, J.; Huang, X. Self‐Assembly of Heterogeneous Ferritin Nanocages for Tumor Uptake and Penetration. Advanced Science, 2024, 11(17), 2309271. doi: 10.1002/advs.202309271
Han, G.; Kim, H.; Jang, H.; Kim, E.S.; Kim, S.H.; Yang, Y. Oral TNF-α siRNA delivery via milk-derived exosomes for effective treatment of inflammatory bowel disease. Bioactive Materials, 2024, 34, 138-149. doi: 10.1016/j.bioactmat.2023.12.010
Halim, A.; Al-Qadi, N.; Kenyon, E.; Conner, K.N.; Mondal, S.K.; Medarova, Z.; Moore, A. Inhibition of miR-10b treats metastatic breast cancer by targeting stem cell-like properties. Oncotarget, 2024, 15, 591-606. doi: 10.18632/oncotarget.28641

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Cy® is a trademark of Cytiva.

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.