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ICG-TFP ester

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Physical properties
Molecular weight981.06
SolventDMSO
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

OverviewpdfSDSpdfProtocol


Molecular weight
981.06
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. The amino-reactive ICG-Sulfo-OSu (#180) is predominantly used to make various ICG bioconjugates with antibodies and other biological molecules since it has improved water solubility compared to other ICG amine-reactive derivatives. However, the well-known ICG-Sulfo-OSu is extremely unstable. ICG-TFP ester has significantly improved stability and good water solubility. Under the same conditions, it gives higher conjugation yield than ICG-Sulfo-OSu.

Calculators


Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of ICG-TFP ester to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

0.1 mg0.5 mg1 mg5 mg10 mg
1 mM101.931 µL509.653 µL1.019 mL5.097 mL10.193 mL
5 mM20.386 µL101.931 µL203.861 µL1.019 mL2.039 mL
10 mM10.193 µL50.965 µL101.931 µL509.653 µL1.019 mL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

Mass (Calculate)Molecular weightVolume (Calculate)Concentration (Calculate)Moles
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Citations


View all 5 citations: Citation Explorer
In vivo photoacoustic imaging of cancer using indocyanine green-labeled monoclonal antibody targeting the epidermal growth factor receptor
Authors: Sano, K., Ohashi, M., Kanazaki, K., Ding, N., Deguchi, J., Kanada, Y., Ono, M., Saji, H.
Journal: Biochem Biophys Res Commun (2015): 820-5
In vitro and in vivo analysis of indocyanine green-labeled panitumumab for optical imaging-a cautionary tale
Authors: Zhou, Y., Kim, Y. S., Milenic, D. E., Baidoo, K. E., Brechbiel, M. W.
Journal: Bioconjug Chem (2014): 1801-10
Short PEG-linkers improve the performance of targeted, activatable monoclonal antibody-indocyanine green optical imaging probes
Authors: Sano, K., Nakajima, T., Miyazaki, K., Ohuchi, Y., Ikegami, T., Choyke, P. L., Kobayashi, H.
Journal: Bioconjug Chem (2013): 811-6
Dual-modality imaging with 99mTc and fluorescent indocyanine green using surface-modified silica nanoparticles for biopsy of the sentinel lymph node: an animal study
Authors: Tsuchimochi, M., Hayama, K., Toyama, M., Sasagawa, I., Tsubokawa, N.
Journal: EJNMMI Res (2013): 33
Activatable fluorescent cys-diabody conjugated with indocyanine green derivative: consideration of fluorescent catabolite kinetics on molecular imaging
Authors: Sano, K., Nakajima, T., Ali, T., Bartlett, D. W., Wu, A. M., Kim, I., Paik, C. H., Choyke, P. L., Kobayashi, H.
Journal: J Biomed Opt (2013): 101304