Beschrijving
D-Valine benzyl ester 4-toluenesulfonate is the D-configured counterpart of the well-known protected valine salt used in peptide and stereochemical synthesis. It is registered under CAS number 17662-84-9, possesses the empirical formula C₁₂H₁₇NO₂·C₇H₈O₃S and a molar mass of 379,47 g/mol. Provided as a salt in a 50 g pack, the benzyl ester protects the carboxyl group while the 4-toluenesulfonate counter-ion yields a stable, crystalline solid suitable for weighing and dissolution. Incorporation of D-valine residues is important for designing protease-resistant peptides, foldamers and chiral auxiliaries. Research groups working on unnatural amino-acid sequences or inversion of configuration therefore rely on well-defined D-series esters of this type. The material is available from manufacturer Carl ROTH within the biochemicals range and supports both exploratory coupling trials and preparative isolation of D-valine-containing intermediates. Documented identity parameters simplify batch records and analytical verification throughout the synthetic workflow.
This article is part of Click chemistry, bioconjugation & synthesis reagents, in Biochemicals & reagents.
Key features
- Purity (GC): reported (%)
- Purity (HPLC): reported (%)
- IR-spectrum: corresponds to reference spectrum
- pH value: reported ()
- Assay (TLC): reported (%)
- Content (acidim.): reported (%)
- Assay: reported (%)
- Melting point: reported (°C)
- Colour: reported
- Form: reported
- CAS number: 17662-84-9
- Pack sizes: 50 g, 100 g, 250 g, 500 g
- Empirical formula: C₁₂H₁₇NO₂·C₇H₈O₃S
- Molar mass: 379,47 g/mol
- Configuration: D-Valine derivative
- UNSPSC: 12352200
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about D-Valine benzyl ester 4-toluenesulfonate
What is this article?
D-Valine benzyl ester 4-toluenesulfonate is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Aminozuren & peptiden, inside Biochemicaliën & reagentia, in Microbiologische media.
An amino acid or a peptide is specified by the sequence or the residue, the chirality, and for a peptide the purity and the salt form. L and D forms are different compounds. A trifluoroacetate salt and a hydrochloride salt weigh differently per mole of peptide.
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 Biochemicaliën & reagentia. The sub-category is Aminozuren & peptiden. The catalogue is Microbiologische media.
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