Description
Nile red is an extra pure lipophilic phenoxazine dye used in biological staining and fluorescence-related laboratory applications. It is defined by CAS number 7385-67-3, the empirical formula C₂₀H₁₈N₂O₂ and a molar mass of 318,38 g/mol. Nile red is widely employed in microscopy, cell biology and analytical workflows where a selective lipid-sensitive fluorophore is required. The extra pure quality supports consistent performance in research and teaching laboratories working with dyes for biological applications. This reagent is available from manufacturer Carl ROTH in a compact gram quantity suited to method development and routine staining. Prepare solutions and handle the solid according to good laboratory practice, and consult the safety data sheet before first use.
This article belongs on Fluorescent dyes & labels, in Dyes, stains & indicators.
Key features
- Appearance: brown to green cryst. powder
- CAS number: 7385-67-3
- Pack sizes: 1 g, 5 g, 10 g
- Empirical formula: C₂₀H₁₈N₂O₂
- Molar mass: 318,38 g/mol
- Grade: extra pure
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Nile red, extra pure, 1 g, glass
What is this article?
Nile red, extra pure, 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.
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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.