ChemicalBook--->CAS DataBase List--->1469541-54-5

1469541-54-5

1469541-54-5 Structure

1469541-54-5 Structure
IdentificationBack Directory
[Name]

Cyanine7.5 NHS ester
[CAS]

1469541-54-5
[Synonyms]

Cy7.5 SE
Cy7.5 NHS
Cyanine7.5 NHS ester
[Molecular Formula]

C49H52N3O4+
[MOL File]

1469541-54-5.mol
[Molecular Weight]

746.97
Chemical PropertiesBack Directory
[solubility ]

可溶于DMF等有机溶剂
[Appearance]

Green solid
[ex/em]

784/814nm (MeOH/PBS buffer)
[ε(extinction coefficient)]

223000 L⋅mol−1⋅cm−1
[Φ(quantum yield)]

0.10
Hazard InformationBack Directory
[Description]

Cyanine7.5 is a NIR dye with very long-wave emission. This product is amine-reactive derivative of this fluorophore.


Near infrared radiation readily penetrates tissues and can be used for imaging applications in vivo.


This product can be used for the labeling of various biomolecules containing amine groups, such as proteins and peptides, to track their distribution in organism in vivo by NIR imaging.


Increased rigidity of central polymethyne moiety allows to increase quantum yield by 20% compared to parent structure of Cy7.5® NHS.

[Chemical Properties]

Appearance: Green solid
ex/em: 784/814nm (MeOH/PBS buffer)
Extinction coefficient (ε): 223000 L??mol??1??cm??1
Quantum yield (Φ): 0.10
[Abs/Em Maxima]

788/808 nm
[Fluoresene quantum yield]

0.1
[Extinction Coefficient]

223000
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