Description
DL-Cysteine is a sulfur-containing amino acid supplied at a minimum purity of 97 % for biochemistry applications, with CAS number 3374-22-9 and empirical formula C₃H₇NO₂S. Its molar mass is 121,16 g/mol, giving laboratories a defined molecular weight for stoichiometric calculations in solution preparation and synthetic work. Available from manufacturer Carl ROTH, the reagent is intended for biochemistry where the racemic cysteine form is appropriate. Researchers may employ DL-cysteine in investigations of thiol chemistry, redox-related pathways, peptide model systems, and other experimental setups that call for a cysteine building block. The stated minimum purity supports reproducible weighing and dissolution when preparing media components, reaction mixtures, or analytical references. As a compact pack size, it is practical for laboratories that need controlled quantities without excess inventory. The material integrates readily into standard wet-chemistry and biochemistry workflows that utilise amino acid reagents of documented specification.
This article is part of Click chemistry, bioconjugation & synthesis reagents, in Biochemicals & reagents.
Key features
- Appearance: white to off-white powder
- Assay: ≥97 %
- CAS number: 3374-22-9
- Pack sizes: 5 g, 25 g, 100 g
- EG nr.: 222-160-2
- Purity: min. 97 %
- Empirical formula: C₃H₇NO₂S
- Molar mass: 121,16 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
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Questions about DL-Cysteine, min. 97 %, for biochemistry, 5 g, plastic
What is this article?
DL-Cysteine, min. 97 %, for biochemistry, 5 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.
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