Lumiprobe 磺酸基CY3.5 NHS酯 sulfo-Cyanine3.5 NHS ester

Lumiprobe 磺酸基CY3.5 NHS酯 sulfo-Cyanine3.5 NHS ester


Cyanine3.5 is a fluorescent dye with absorption and emission intermediate between Cyanine3 and Cyanine5. Sulfonated version contains four sulfo groups which ensure high solubility and hydrophilicity of the fluorophore and labeled conjugates.

The NHS ester reactive group allows to label primary and secondary amine groups.

sulfo-Cyanine3.5 NHS ester, 62320

Structure of sulfo-Cyanine3.5 NHS ester

Cat. # Quantity Lead time
12320 1 mg in stock
22320 5 mg in stock
42320 25 mg in stock
52320 50 mg in stock
62320 100 mg in stock

General properties

Appearance: deep purple powder
Molecular weight: 1088.33
CAS number: 2231670-91-8 (without cation)
Molecular formula: C42H40N3K3O16S4
Solubility: good in water, DMF, DMSO
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.

Spectral properties

Excitation maximum, nm: 576
ε, L⋅mol−1⋅cm−1: 139000
Emission maximum, nm: 603
Fluorescence quantum yield: 0.11
CF260: 0.16
CF280: 0.17