Sulfo-Cyanine 5.5 carboxylic acid (A270284)

Sulfo-Cyanine 5.5 carboxylic acid

Sulfo-Cyanine 5.5 (analog of Cy5.5®) is a water-soluble, far red emitting fluorophore. Due to four sulfo-groups, the dye possesses negative charge in neutral pH, and very high hydrophilicity. As a cyanine dye, sulfo-Cyanine 5.5 shows very low dependence of the fluorescence on pH, and very high extinction coefficient.

673 nm

235000 M^-1cm^-1

691 nm

2183440-68-6

0.09

95% (by ¹H NMR and HPLC-MS).

C₄₀H₃₉K₃N₂O₁₄S₄

1017.31 kDa

Dark blue solid.

Well soluble in water, DMF, and DMSO (0.39 M = 400 g/L).

Shipped at room temperature. Upon delivery, store in the dark at -20°C. Avoid prolonged exposure to light. Desiccate.

This product is for research use only. It is not intended for diagnostic or therapeutic use.