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MilliporeSigma

543365

IR-820

Dye content 80 %

Synonym(s):

2-[2-[2-Chloro-3-[[1,3-dihydro-1,1-dimethyl-3-(4-sulfobutyl)-2H-benzo[e]indol-2-ylidene]-ethylidene]-1-cyclohexen-1-yl]-ethenyl]-1,1-dimethyl-3-(4-sulfobutyl)-1H-benzo[e]indolium hydroxide inner salt, sodium salt, New Indocyanine Green

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1 G

$176.00

$176.00

Estimated to ship onFebruary 17, 2026Details

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About This Item

Empirical Formula (Hill Notation):
C46H50ClN2NaO6S2
CAS Number:
172616-80-7
Molecular Weight:
849.47
NACRES:
NA.23
PubChem Substance ID:
57651466
UNSPSC Code:
12352103
MDL number:
MFCD04038859

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InChI

1S/C46H51ClN2O6S2.Na/c1-45(2)40(48(28-9-11-30-56(50,51)52)38-24-20-32-14-5-7-18-36(32)42(38)45)26-22-34-16-13-17-35(44(34)47)23-27-41-46(3,4)43-37-19-8-6-15-33(37)21-25-39(43)49(41)29-10-12-31-57(53,54)55;/h5-8,14-15,18-27H,9-13,16-17,28-31H2,1-4H3,(H-,50,51,52,53,54,55);/q;+1/p-1

SMILES string

[Na+].CC1(C)\C(=C\C=C2/CCCC(\C=C\C3=[N+](CCCCS([O-])(=O)=O)c4ccc5ccccc5c4C3(C)C)=C2Cl)N(CCCCS([O-])(=O)=O)c6ccc7ccccc7c16

InChI key

RANIQVAJHXBIAY-UHFFFAOYSA-M

composition

Dye content, 80%

mp

>300 °C (lit.)

λmax

820 nm

Quality Level

100

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Show Differences

1 of 4

This Item
543349543292425311
IR-820 Dye content 80 %

Sigma-Aldrich

543365

IR-820

IR-806 Dye content 90 %

Sigma-Aldrich

543349

IR-806

IR-783 Dye content 90 %

Sigma-Aldrich

543292

IR-783

IR-780 iodide Dye content ≥95 %

Sigma-Aldrich

425311

IR-780 iodide

composition

Dye content, 80%

composition

Dye content, 90%

composition

Dye content, 90%

composition

Dye content, ≥95%

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

mp

>300 °C (lit.)

mp

214-218 °C (lit.)

mp

209-212 °C (lit.)

mp

232-234 °C (lit.)

λmax

820 nm

λmax

806 nm

λmax

782 nm

λmax

780 nm

General description

IR-820 is an indocyanine dye, which has a broad absorption band at 690 nm in aqueous solution. It is a near infrared dye (NIR) with a molar absorptivity of 72 x 104 dm3mol−1cm−1.[1]

Application

IR-820 is a cost-effective imaging agent with low cytotoxicity. It can be used for image guided photothermal therapy for the treatment of cancer.[2][3] It is also used as a contrasting agent for the detection and quantification of infected tissues in animals.[4]

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
SHBT4230
SHBR3228
SHBM1333
MKCH1899
MKBZ1942V

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SERS characterization of the indocyanine-type dye IR-820 on gold and silver nanoparticles in the near infrared
Neves TBV and Andrade GFS
Journal of Spectroscopy (New York, NY, United States), 2015 (2015)
IR 820 stabilized multifunctional polycaprolactone glycol chitosan composite nanoparticles for cancer therapy
Kumar P and Srivastava R
Royal Society of Chemistry Advances, 5(69), 56162-56170 (2015)
Near-infrared imaging of injured tissue in living subjects using IR-820
Prajapati SI, et al.
Molecular Imaging, 8(1), 7290-2009 (2009)
IR 820 dye encapsulated in polycaprolactone glycol chitosan: Poloxamer blend nanoparticles for photo immunotherapy for breast cancer
Kumar P and Srivastava R
Materials Science and Engineering, C, 57(69), 321-327 (2015)
Xia Dong et al.
Biomaterials, 209, 111-125 (2019-04-30)
As synergistic photothermal immunotherapy has developed as one of the most attractive strategies for cancer therapy, it is crucial to design an effective photothermal immunotherapy system to enhance the synergistic anti-tumor effect and reveal the essential role of each treatment.
View All Related Papers

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Questions

1–4 of 4 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. What are excitation and emission wavelengths for IR-820, Product 543365?

    1 answer

    1. The excitation wavelength is 710 nm, with an emission maximum of 820 nm, according to Prajapati, S.I, et al., Mol. Imaging, 8(1), 45-54 (2009).

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  4. What is the Department of Transportation shipping information for this product?

    1 answer

    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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