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ICG acid
Indocyanine green (ICG) is a cyanine dye used in medical diagnostics. It is used for determining cardiac output, hepatic function, and liver blood flow, and for ophthalmic angiography. It has a peak spectral absorption close to 800 nm. These infrared frequencies penetrate retinal layers, allowing ICG angiography to image deeper patterns of circulation than fluorescein angiography. This ICG acid can be used to modify the molecules that contain an amino group.
Chemical structure for ICG acid
Chemical structure for ICG acid
CatalogSize
Price
Quantity
1895 mg
Price
 
Physical properties

Molecular weight844.98
SolventDMSO
Spectral properties

Correction factor (280 nm)0.076
Extinction coefficient (cm -1 M -1)
230000
Excitation (nm)789
Emission (nm)813
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12171501
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Page updated on October 13, 2025