Sulfo-Cyanine5.5 maleimide | 2183440-58-4

Product Introduction

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.

Chemical Information
Related CAS	2183440-57-3 (inner salt)
Purity	NMR 1H, HPLC-MS (95%)
Solubility	good in water, DMSO, DMF
Appearance	dark colored solid

Product Specification
ε, L⋅mol-1⋅cm-1	235000
Excitation	673
Emission	691
Storage	24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.