D-3-Hydroxykynurenine is a D-configured hydroxy-substituted kynurenine derivative, belonging to the tryptophan catabolite family of aromatic amino acid metabolites. It contains an amino group and a carboxyl group characteristic of amino acid-like side-chain chemistry, along with a phenolic hydroxyl at the 3-position that can participate in hydrogen bonding and redox-relevant transformations, while the D stereochemistry refers to the chiral center present in the molecule. D-3-Hydroxykynurenine is used in chemical biology and analytical method development as a defined aromatic amino acid metabolite analogue for studies of enzyme-substrate relationships, metabolic profiling, and tracer-based or comparative assays that require a specific hydroxykynurenine structure.
CAT No: CP22002
D-3-Hydroxykynurenine is a D-configured, hydroxylated kynurenine-derived amino acid metabolite featuring a chiral center at the 3-position and a phenolic alcohol at the D-3-hydroxy site. The molecule contains a conjugated aromatic heterocycle system consistent with kynurenine chemistry, along with an amino acid-like functionality that can exist as a zwitterionic or salt form depending on pH. The phenolic hydroxyl and ring nitrogens enable hydrogen bonding and metal coordination behavior, while the stereochemical definition at C-3 supports stereospecific recognition in biochemical assays and enzyme studies. As a biochemical research intermediate, D-3-Hydroxykynurenine can undergo controlled derivatization for analytical detection, peptide-adjacent conjugation, and downstream synthesis of kynurenine-pathway related analogs.
1. Enzyme Mechanism Studies
D-3-Hydroxykynurenine is suitable for enzyme mechanism and substrate-recognition studies in kynurenine-pathway biochemistry, where D-stereochemistry at C-3 can be critical for stereospecific binding and turnover. The phenolic hydroxyl group and the conjugated heteroaromatic framework provide distinct interaction motifs for active-site residues, enabling structure-function analysis of hydroxylated kynurenine substrates. The amino acid-like functional pattern supports use as a defined metabolite standard or as a reference compound in kinetic and binding experiments. Downstream, D-3-Hydroxykynurenine can support generation of mechanistic analogs and metabolite-mimicking probes used to map catalytic requirements across hydroxylation and redox-related steps.
2. Analytical Standards And Metabolomics
D-3-Hydroxykynurenine is applicable to analytical research and metabolomics workflows where stereodefined kynurenine metabolites must be distinguished with high chemical specificity. The D-3-hydroxy phenolic functionality enables predictable derivatization options for LC-MS/MS detection, fluorescence labeling, or electrochemical readouts, while the heteroaromatic system supports strong chromatographic and ionization behavior. The defined chiral center helps avoid ambiguity when profiling hydroxylated kynurenine species that may differ in stereochemistry. D-3-Hydroxykynurenine can therefore serve as a calibration or identity standard for pathway quantification and for method development targeting hydroxylated aromatic amino acid metabolites.
3. Chemical Biology Probes
D-3-Hydroxykynurenine can be employed in chemical biology research to build metabolite-based probes that interrogate kynurenine-pathway interactions with proteins or cofactors. The phenolic hydroxyl and heteroaromatic core enable conjugation strategies such as O-functionalization for linker attachment, or derivatization to introduce handles compatible with affinity tags or bioorthogonal labeling chemistries. The stereodefined D-configuration supports stereospecific probe behavior when enzymes or binding proteins discriminate between enantiomeric hydroxylated kynurenines. The resulting labeled or tethered derivatives can be used to track binding, localization, or competitive recognition in biochemical systems and applied assay development.
4. Peptidomimetic Scaffold Building
D-3-Hydroxykynurenine is suitable as an amino acid-derived chiral fragment for peptidomimetic and molecular scaffold construction where a hydroxylated kynurenine-like motif is incorporated into larger structures. The molecule's amino acid-like functionality and phenolic hydroxyl can be leveraged to create protected intermediates that participate in coupling chemistry or serve as side-chain mimics in constrained analogs. The conjugated heteroaromatic system can contribute to aromatic stacking and hydrogen-bonding patterns that influence conformational preference and molecular recognition. Downstream synthesis can use D-3-Hydroxykynurenine-derived building blocks to generate stereochemically defined analog libraries for SAR studies and mechanistic mapping of hydroxylated aromatic amino acid recognition.
5. Process Chemistry Intermediate
D-3-Hydroxykynurenine functions as a chiral, stereodefined intermediate for fine chemical synthesis routes targeting hydroxylated kynurenine derivatives and pathway-related reference materials. The phenolic hydroxyl and heteroaromatic core support a protecting-group strategy that can be tuned for selective transformations, including temporary phenol protection during functional group interconversions and later deprotection to restore the D-3-hydroxy motif. The defined stereocenter enables consistent downstream stereochemical outcomes when used to prepare analogs for analytical method transfer or for manufacturing of research-grade metabolite standards. D-3-Hydroxykynurenine therefore aligns with scalable intermediate preparation in industrial chemical manufacturing contexts that require stereochemical integrity and reproducible functional group behavior.
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