Description
L-Seleno-L-methionine is a selenium-containing amino acid analogue for biochemical research, registered under CAS number 3211-76-5 with the empirical formula C₅H₁₁NO₂Se. Its molar mass is 196,11 g/mol, enabling precise stoichiometric calculations when the compound is weighed or dissolved for experimental work. The structure combines the L-methionine carbon skeleton with selenium in place of sulfur, a substitution widely recognised in specialised amino-acid and metalloid biochemistry contexts. L-Seleno-L-methionine (Carl ROTH) is listed among biochemical chemicals and is associated with UN number 3283 for transport classification. Documented CAS, formula, and molar-mass data help laboratories align orders with protocols that specify this enantiomerically designated seleno-methionine derivative.
This article belongs on Microscopy stains & staining solutions, in Dyes, stains & indicators.
Key features
- CAS number: 3211-76-5
- Pack sizes: 5 g, 10 g, 25 g
- Empirical formula: C₅H₁₁NO₂Se
- Molar mass: 196,11 g/mol
- Storage temperature: +2 to +8 °C
- UN nr.: 3283
- Safety Data Sheet:
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Hazard Statements (H-Phrases)
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Questions about L-Seleno-L-methionine, 5 g
What is this article?
L-Seleno-L-methionine, 5 g is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Microscopy stains & staining solutions, inside Dyes, stains & indicators, in Lab chemicals.
A microscopy stain binds a structure so it can be seen: haematoxylin on nuclei, eosin on cytoplasm, Gram reagents on a bacterial wall. A ready solution and a dry dye to be dissolved are different articles. The method names the stain. A substitute dye is a different method.
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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