H-Ala-AMC

H-Ala-AMC is an alanine-based amino acid derivative in which the α-amino group is acetylated (N-acetyl alanine motif) and the carboxyl functionality is linked to 7-amino-4-methylcoumarin (AMC), forming a stable amide/activated coumarin reporter conjugate. The molecule retains the stereogenic α-carbon of L-alanine, providing defined chiral geometry for enzyme recognition and stereospecific cleavage studies. The coumarin fluorophore introduces a strong, measurable optical handle, while the acetylated amine reduces nonspecific reactivity and improves compatibility with aqueous assay conditions. As a compact, single-residue substrate analog, H-Ala-AMC functions as a mechanistic and analytical intermediate for peptide bond processing chemistry and coumarin-based detection workflows.

1. Protease Activity Assays

H-Ala-AMC is used in biochemical research and screening workflows as a coumarin-reporter substrate for protease and peptidase activity measurements. The alanine-derived residue and the defined L-configuration at the α-carbon support enzyme substrate recognition, while the AMC reporter enables fluorescence readout upon cleavage of the alanine-coumarin linkage. N-acetylation of the amino terminus helps control background reactivity and supports consistent assay behavior across different buffer systems. Downstream, the resulting AMC signal can be applied to generate quantitative structure-function relationships for protease specificity and inhibitor profiling in enzymology and chemical biology.

2. Peptide Coupling Reference

H-Ala-AMC is applied in synthetic organic chemistry as a small, chiral amino acid-coumarin conjugate reference for evaluating peptide coupling and acyl transfer conditions. The presence of an alanine backbone with a reporter-tagged carboxamide provides a chemically defined target for studying how coupling reagents, bases, and activation strategies influence amide formation and stability. The acetylated amino functionality models a protected N-terminus concept, which can inform selection of protecting-group strategies when preparing protected amino acid derivatives for longer peptide sequences. The compound can also serve as a bench-stable analytical standard for monitoring derivatization steps that generate AMC-labeled intermediates.

3. Chemical Biology Probes

H-Ala-AMC is suitable for chemical biology applications that require residue-specific fluorescent probes for monitoring enzymatic processing in complex mixtures. The L-alanine stereocenter and the single-residue architecture can be leveraged to probe aminopeptidase- or protease-like pathways with residue selectivity, while the AMC fluorophore provides a direct optical handle for imaging-compatible or plate-reader-compatible detection formats. The coumarin reporter can be used to design probe libraries by swapping amino acid identities while keeping the reporter chemistry consistent, enabling SAR studies focused on substrate recognition. The N-acetyl motif can further be used to tune probe behavior by modulating terminal reactivity and minimizing side reactions during conjugate preparation.

4. Process Chemistry Intermediate

H-Ala-AMC is utilized in process chemistry and fine chemical synthesis planning as an amino acid-reporter intermediate that supports route development for coumarin-labeled substrate materials. The defined stereochemistry of the alanine unit and the robust amide linkage to AMC make the compound a practical target for scale-oriented synthetic design, including protecting-group selection and purification strategy considerations. The acetylated amine reduces variability from free amine side reactions, supporting reproducible manufacture of AMC-tagged intermediates used in analytical and screening supply chains. Downstream, H-Ala-AMC can be converted into related labeled substrates by analogous coupling or reporter-exchange strategies, supporting specialty chemical production of fluorogenic amino acid derivatives.

5. Analytical Research Standards

H-Ala-AMC is employed in analytical research as a fluorescence-active standard for method validation, calibration, and specificity testing in coumarin-based detection assays. The AMC chromophore provides a strong, quantifiable signal, while the alanine identity and L-stereochemistry support assay discrimination when enzymes exhibit stereochemical or residue selectivity. The acetylated amino terminus contributes to predictable chemical stability, enabling consistent reference behavior during sample handling and analytical runs. The compound can also function as a benchmark material for developing LC/fluorescence workflows or for verifying cleavage products in studies of amino acid derivative transformation and peptide bond hydrolysis.

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