Indocyanine green for microscopy, Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY
Warning

Synonyms: IR-125, 4,5-benzoindotricarbocyanine, IC Green, Cardiogreen, Sodium 4-(2-(7-(1,1-dimethyl-3-(4-sulphonatobutyl)-1H-benzo[e]indol-2(3H)-ylidene)hepta-1,3,5-trien-1-yl)-1,1-dimethyl-1H-benzo[e]indol-3-ium-3-yl)butane-1-sulphonate, Foxgreen

M-Clarity™ quality level = MQ200

21980-100MG-F 21980-500MG-F
21980-100MG-FEA 231 EUR
21980-100MG-F 21980-500MG-F
Indocyanine green for microscopy, Sigma-Aldrich®
Indocyanine green

Cardiogreen was injected in animals intravenously for dynamic optical imaging system to study the capability of capturing the in vivo biodistribution kinetics.


Cardiogreen is a dye used for microscopy. This dye has its maximum extinction at the same wavelength as reduced and oxygenated haemoglobin meet making it possible to record the oxygen saturation in blood. This dye has no side-effects.

Formula: C₄₃H₄₇N₂NaO₆S₂
MW: 774,99 g/mol
Storage Temperature: RT
MDL Number: MFCD00013078
CAS Number: 3599-32-4
EINECS: 222-751-5

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Specification Test Results

Appearance (colour) Green to very dark green and brown to very dark brown
Appearance (form) Powder
Thin layer chromatogr. Corresponds to standard
Solubility (colour) 0.01 g in 10 ml water
Solubility (method) 0.01 g in 10 ml water
Carbon content 66.64% (theory)
Hydrogen content 6.11% (theory)
Nitrogen content 3.61% (theory)
Infrared spectrum Conforms to structure
Wavelength (1) (UV) 774 - 784 nm
Extinction (1%/1 cm) (1) (UV) ≥2000
Wavelength (2) (UV) 712 - 722 nm
Extinction (1%/1 cm) (2) (UV) ≥900
Wavelength (3) (UV) 386 - 396 nm
Extinction (1%/1 cm) (3) (UV) ≥115
Solvent (UV) Water
Emission maximum 801 - 811 nm
Remarks on luminescence Exc.: 781 nm in pbs

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