Sulfo-Cyanine5.5 maleimide

Cat. # Quantity Price Lead time
17380 1 mg $110.00 in stock
27380 5 mg $290.00 5 days
47380 25 mg $690.00 in stock
57380 50 mg $1270.00 in stock
67380 100 mg $1990.00 in stock

Sulfo-Cyanine5.5 dye is a water soluble far red to NIR emitting dye which is very hydrophilic due to the presence of four sulfo groups. Sulfo-Cyanine5.5 derivatives exhibit high water solubility. The dye is a perfect choice for the labeling of sensitive proteins, nanoparticles, and highly hydrophylic biopolymers.

This maleimide is a thiol reactive dye that selectively labels cysteine residues. Disulfide bonds of native proteins should be reduced with an appropriate reducing agent, such as TCEP, according to our recommended protocol.

Absorption and emission spectra of sulfo-Cyanine5.5

Absorption and emission spectra of sulfo-Cyanine5.5

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Cyanine7.5 maleimide

Cyanine7.5 maleimide is a thiol reactive near infrared dye.
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Cyanine5.5 maleimide

Cyanine5.5 maleimide is a thiol reactive dye for protein labeling.
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get free express delivery

General properties

Appearance: dark colored solid
Mass spec M+ increment: 1024.2
Molecular weight: 1139.43
CAS number: 2183440-58-4 (potassium salt); 2183440-57-3 (inner salt)
Molecular formula: C46H45K3N4O15S4
Solubility: good in water, DMSO, DMF
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 maximum, nm: 673
ε, L⋅mol−1⋅cm−1: 235000
Emission maximum, nm: 691
CF260: 0.09
CF280: 0.11

Product citations

  1. Chen, Q.; Gao, M.; Li, Z.; Xiao, Y.; Bai, X.; Boakye-Yiadom, K.O.; Xu, X.; Zhang, X.-Q. Biodegradable nanoparticles decorated with different carbohydrates for efficient macrophage-targeted gene therapy. Journal of Controlled Release, 2020, 323, 179–190. doi: 10.1016/j.jconrel.2020.03.044
  2. Wang, J.; Johnson, A.G.; Lapointe, C.P.; Choi, J.; Prabhakar, A.; Chen, D.-H.; Petrov, A.N.; Puglisi, J.D. eIF5B gates the transition from translation initiation to elongation. Nature, 2019, 573, 605–608. doi: 10.1038/s41586-019-1561-0
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