Description
Coumarin VIS-438 Diethylamino Benzimidazol is a coumarin dye with the empirical formula C₂₀H₁₉N₃O₂, CAS number 27425-55-4 and a molar mass of 333,39 g/mol. Measured in methanol, the absorption maximum is 438 nm, placing the chromophore firmly in the visible range for spectroscopic and dye applications. It is listed under EG nr. 248-451-4 and Identity and optical data from manufacturer Carl ROTH support reproducible selection of this diethylamino benzimidazol coumarin in research workflows. The defined molar mass and absorption maximum aid calibration, spectral comparison and method development involving coumarin-type dyes. quantity is practical for screening, small-scale synthesis follow-up and reference stock preparation. Clear CAS, EG and formula labelling simplifies inventory control and documentation in analytical, materials and photochemistry laboratories working with visible-absorbing organic dyes.
This article is part of Fluorescent dyes & labels, in Dyes, stains & indicators.
Key features
- CAS number: 27425-55-4
- Pack sizes: 1 g, 5 g, 10 g
- EG nr.: 248-451-4
- Empirical formula: C₂₀H₁₉N₃O₂
- Molar mass: 333,39 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Warning
Hazard Statements (H-Phrases)
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Coumarine VIS-438, Diethylamino Benzimidazol, 1 g, glass
What is this article?
Coumarine VIS-438, Diethylamino Benzimidazol, 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.