Lumiprobe Cy7染料 Cyanine7 NHS ester

Lumiprobe Cy7染料 Cyanine7 NHS ester


Amine reactive Cyanine7, near infrared fluorescent dye, an improved analog of Cy7®.

NIR fluorophores can be used to take advantage of near infrared window of biological tissues – increased transparency of tissues in this spectral region allows to carry out in vivo imaging.

This reagent can be utilized to produce Cyanine7-labeled biomolecules for subsequent use in various in vivo research, and drug design related experiments.

The structure of Cyanine7 features rigidized design of central polymethyne chain. This molecular reinforcement allows to increase quantum yield by 20% compared with parent structure, increasing fluorescence brightness.

This reagent requires organic co-solvent for the labeling (please see Recommended Protocols section below). Water-soluble Cyanine7 NHS ester is also available, and recommended for protein NIR labeling.



该试剂在标记时需要共溶剂有机溶剂。水溶Cy7 NHS ester可以用于蛋白NIR标记。

General properties

Appearance: dark green solid
Molecular weight: 733.64
CAS number: 1432019-64-1 (chloride), 1432466-81-3 (without anion)
Molecular formula: C41H48N3BF4O4
IUPAC name: 1‐{6‐[(2,5‐dioxopyrrolidin‐1‐yl)oxy]‐6‐oxohexyl}‐ 3,3‐dimethyl‐2‐[(E)‐2‐[(3E)‐3‐{2‐[(2E)‐1,3,3‐ trimethyl‐2,3‐dihydro‐1H‐indol‐2‐ ylidene]ethylidene}cyclohex‐1‐en‐1‐yl]ethenyl]‐3H‐ indol‐1‐ium tetrafluoroborate
Solubility: soluble in organic solvents (DMSO, DMF, dichloromethane), low solubility in water
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: 750
ε, L⋅mol−1⋅cm−1: 199000
Emission maximum, nm: 773
Fluorescence quantum yield: 0.3
CF260: 0.022
CF280: 0.029
Lumiprobe-Cyanine7 NHS ester结构式:

订购货号 产品名称及规格
15020 Cyanine7 NHS ester, 1 mg
25020 Cyanine7 NHS ester, 5 mg
45020 Cyanine7 NHS ester, 25 mg
55020 Cyanine7 NHS ester, 50 mg
65020 Cyanine7 NHS ester, 100 mg