Description
VIS-589 Trimethine cyanine sodium salt is a polymethine dye with CAS number 1438644-82-6 and empirical formula C₃₉H₄₃N₂NaO₆S₂. It has an absorption maximum of 589 nm in methanol and a molar mass of 722,89 g/mol, placing its optical activity in the visible range. The dye is As a sulfonated trimethine cyanine sodium salt, it provides a defined conjugated system for spectroscopic work, absorption studies, and formulation trials that require reproducible behaviour around 589 nm. Chemical and analytical laboratories can integrate this material into method development, reference measurements, and comparative dye evaluation in methanol-based systems. It is available from manufacturer Carl ROTH within the polymethine dyes range for gram-scale experimental use. The EG number is 812-718-9. This cyanine supports visible-range optical characterisation and related dye research while remaining aligned with the documented physical and chemical parameters of the product.
This article is part of Fluorescent dyes & labels, in Dyes, stains & indicators.
Key features
- CAS number: 1438644-82-6
- Pack sizes: 1 g, 5 g, 10 g
- EG nr.: 812-718-9
- Empirical formula: C₃₉H₄₃N₂NaO₆S₂
- Molar mass: 722,89 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
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Hazard Statements (H-Phrases)
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Questions about VIS-589 Trimethine-, Cyanine Sodium Salt, 1 g, glass
What is this article?
VIS-589 Trimethine-, Cyanine Sodium Salt, 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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