Description
L-Leucine is an essential branched-chain amino acid supplied at min. 98.5 % purity, Ph.Eur., for biochemistry applications. Identified by CAS number 61-90-5 and EG nr. 200-522-0, it has the empirical formula C₆H₁₃NO₂, a molar mass of 131,18 g/mol and a density of 1,293 g/cm³. This grade is intended for biochemical research, method development and laboratory formulations where a defined L-isomer of leucine is required. The material is L-Leucine participates in protein structure studies, culture media design and analytical reference workflows that demand documented identity and Ph.Eur.-aligned quality. From manufacturer Carl ROTH, the product is presented with clear physicochemical data so that molar calculations, solution preparation and documentation can proceed directly from the stated formula and molar mass. Handle according to standard laboratory practice for amino acids and consult the accompanying safety information for workplace measures. The combination of high minimum assay, pharmacopoeial reference and practical pack size makes this L-Leucine suitable for routine biochemistry laboratories seeking a well-specified amino acid reagent.
This article is part of Click chemistry, bioconjugation & synthesis reagents, in Biochemicals & reagents.
Key features
- Appearance: white cryst. powder
- Assay (dry substance): 98.5-101.0 %
- Appearance of solution: complies
- Specific rotation [α]20D: +14.5° to +16.5°
- Sulphated ash: ≤0.1 %
- Loss on drying: ≤0.5 %
- Ammonium (NH4): ≤0.02 %
- Iron (Fe): ≤0.001 %
- Chloride (Cl): ≤0.02 %
- Sulphate (SO4): ≤0.03 %
- CAS number: 61-90-5
- Pack sizes: 100 g, 1 kg, 250 g, 500 g
- EG nr.: 200-522-0
- Purity: min. 98.5 %, Ph.Eur.
- Empirical formula: C₆H₁₃NO₂
- Molar mass: 131,18 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about L-Leucine, min. 98.5 %, Ph.Eur., for biochemistry, 100 g, plastic
What is this article?
L-Leucine, min. 98.5 %, Ph.Eur., for biochemistry, 100 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Click chemistry, bioconjugation & synthesis reagents, inside Biochemicals & reagents, in Microbiology lab supplies.
Click and bioconjugation reagents join two molecules under mild conditions, often an azide to an alkyne, or an NHS ester to an amine. The linker length and the reactive group are the specification. They are small bottles of a reactive compound, and moisture often ruins them.
A biochemical is a molecule of life, sold as a reagent: an amino acid, a sugar, a nucleotide, a lipid, an enzyme, an antibiotic. The difference from a bulk chemical is that the use is a biological one, and the impurities that matter are the ones that change that use. An enzyme is specified by activity, not only by mass. An antibiotic is specified by potency. Papers are on PubMed. Structures are on PubChem. Strains and lines that consume these reagents are at ATCC.
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The category is Biochemicals & reagents. The sub-category is Click chemistry, bioconjugation & synthesis reagents. The catalogue is Microbiology lab supplies.
Shelves beside this one are Amino acids & peptides, Carbohydrates & sugars, Coenzymes, nucleotides & vitamins, Biochemicals (other), Enzymes & substrates, Antibiotics & antimycotics, Lipids, steroids & fatty acids and Detergents & surfactants.
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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