Sulfo-Cyanine5.5 maleimide

Cat. # Quantity Price Lead time
17380 1 mg $110.00 5 days
27380 5 mg $290.00 in stock
47380 25 mg $690.00 5 days
57380 50 mg $1270.00 21 days
67380 100 mg $1990.00 21 days

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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General properties

Appearance: dark colored solid
Mass spec M+ increment: 1024.2
Molecular weight: 1139.43
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: 195000
Emission maximum, nm: 691
CF260: 0.09
CF280: 0.11
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