Cy7 bis-acid is a water-soluble, near-infrared (NIR) fluorescent dye belonging to the heptamethine cyanine family, commonly used in molecular imaging and labeling applications. Its bis-acid functional groups enhance aqueous solubility and enable covalent conjugation to biomolecules such as antibodies, peptides, or oligonucleotides via amide bond formation. Cy7 bis-acid exhibits strong absorption (~750 nm) and emission (~770–780 nm), making it ideal for in vivo imaging due to low background autofluorescence and deep tissue penetration.
MedKoo Cat#: 122643
Name: Cy7 bis-acid
CAS#: 1802626-09-0
Chemical Formula: C42H52ClN2O4+
Exact Mass: 683.3600
Molecular Weight: 684.34
Elemental Analysis: C, 73.72; H, 7.66; Cl, 5.18; N, 4.09; O, 9.35
The following data is based on the product molecular weight 684.34 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 |
