Description
NIR-813 Heptamethine cyanine tosylate is a polymethine dye supplied as the cyanine tosylate for near-infrared optical work. It is identified by CAS number 134127-48-3, EG nr. 685-278-7 and the empirical formula C₄₇H₄₇ClN₂O₃S, with a molar mass of 755,41 g/mol. In methanol the absorption maximum is 813 nm, placing the chromophore firmly in the NIR window used for spectroscopic and imaging-related dye applications. This listing covers in glass, suited to laboratory preparation of stock solutions and comparative dye studies within the polymethine class. The material is offered from manufacturer Carl ROTH as part of a focused range of cyanine dyes for research and analytical use. As a heptamethine cyanine, it supports work where longer-wavelength absorption is required relative to shorter polymethine analogues. Handle and dissolve according to standard laboratory practice for organic dyes, and consult the accompanying safety documentation before use. The defined CAS identity, molar mass and MeOH absorption maximum help laboratories specify the correct NIR-813 grade for method development and routine dye applications.
This article belongs on Fluorescent dyes & labels, in Dyes, stains & indicators.
Key features
- CAS number: 134127-48-3
- Pack sizes: 1 g, 5 g, 10 g
- EG nr.: 685-278-7
- Empirical formula: C₄₇H₄₇ClN₂O₃S
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Hazard Statements (H-Phrases)
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about S 0094 - FEW Chemicals, 813 nm in MeOH, 1 g, glass
What is this article?
S 0094 - FEW Chemicals, 813 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.
Which category should I open next?
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.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.