Description
VIS-549 Trimethine-Cyanine Sodium Salt is a visible-range polymethine cyanine dye provided as the sodium salt for laboratory dye and pigment applications. Key identifiers include CAS number 120724-84-7, empirical formula C₃₁H₃₉N₂NaO₆S₂ and molar mass 622,77 g/mol, together with an absorption maximum in methanol of 549 nm. The trimethine cyanine scaffold and sulfonate-bearing structure support use where a defined VIS absorber around 549 nm is required for spectroscopic or staining-related work. Material is Methanol absorption data assist wavelength matching and method setup in the green-yellow visible window. As a characterised cyanine sodium salt, the product supplies documented composition and optical reference values for research and analytical protocols. It is offered from manufacturer Carl ROTH in the polymethine dyes category and is intended for professional chemical laboratory use under appropriate handling procedures.
This article is part of Fluorescent dyes & labels, in Dyes, stains & indicators.
Key features
- CAS number: 120724-84-7
- Pack sizes: 1 g, 5 g, 10 g
- EG nr.: 812-539-6
- Empirical formula: C₃₁H₃₉N₂NaO₆S₂
- Molar mass: 622,77 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-549 Trimethine-, Cyanine Sodium Salt, 1 g, glass
What is this article?
VIS-549 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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The category is Dyes, stains & indicators. The sub-category is Fluorescent dyes & labels. The catalogue is Lab chemicals.
Shelves beside this one are Microscopy stains & staining solutions and Dyes & pigments.
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