Sulfo-Cyanine5.5 (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-Cyanine5.5 shows very low dependence of the fluorescence on pH, and very high extinction coefficient.
MedKoo Cat#: 558875
Name: Sulfo-Cyanine5.5 carboxylic acid
CAS#: 2183440-68-6 (inner salt)
Chemical Formula: C40H39K3N2O14S4
Exact Mass: 1016.0195
Molecular Weight: 1017.29
Elemental Analysis: C, 47.23; H, 3.86; K, 11.53; N, 2.75; O, 22.02; S, 12.61
The following data is based on the product molecular weight 1,017.29 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 1.15 mL | 5.76 mL | 11.51 mL |
| 5 mM | 0.23 mL | 1.15 mL | 2.3 mL |
| 10 mM | 0.12 mL | 0.58 mL | 1.15 mL |
| 50 mM | 0.02 mL | 0.12 mL | 0.23 mL |
