Description
NIR-775 Heptamethine Cyanine Chloride is a near-infrared polymethine dye identified by CAS number 199444-11-6 and empirical formula C₃₂H₃₆Cl₂N₂. As a cyanine chloride salt it displays an absorption maximum of 775 nm in methanol and a molar mass of 519,55 g/mol, which is useful for NIR applications centred near 775 nm. The material is It supports fluorescence imaging, spectroscopic labelling, and development of NIR chromophores where a defined absorption peak and molecular weight are required. This heptamethine cyanine chloride is offered by manufacturer Carl ROTH for chemical and analytical use. EG number 812-331-5 assists traceable documentation in controlled laboratory environments. Combining a heptamethine structure, chloride counter-ion, and methanol absorption at 775 nm, the dye is suited to near-infrared studies that depend on reproducible optical behaviour and clear compositional data.
This article is part of Fluorescent dyes & labels, in Dyes, stains & indicators.
Key features
- CAS number: 199444-11-6
- Pack sizes: 1 g, 5 g, 10 g
- EG nr.: 812-331-5
- Empirical formula: C₃₂H₃₆Cl₂N₂
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
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Hazard Statements (H-Phrases)
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Questions about S 0450 - FEW Chemicals, 775 nm in MeOH, 1 g, glass
What is this article?
S 0450 - FEW Chemicals, 775 nm in MeOH, 1 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Fluorescent dyes & labels, inside Dyes, stains & indicators, in Lab chemicals.
A fluorescent dye absorbs at one wavelength and emits at a longer one. As a label it is attached to a protein, a nucleic acid or a cell. Excitation and emission maxima, and the reactive group if it must conjugate, are the specification. The colour name does not tell you the wavelengths.
A dye or a stain binds, or changes colour, so that something invisible becomes visible. An indicator changes at a pH or a redox point. A fluorescent dye absorbs one wavelength and emits another, which is how a microscope or a plate reader picks it out. The excitation and emission, or the transition interval, are the specification. The colour name on the label is not. Structures are on PubChem under IUPAC names. Methods are in the PubMed literature.
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