Bzl-L-Ala-OMe*HCl

Bzl-L-Ala-OMe*HCl is an L-alanine methyl ester hydrochloride bearing a benzyloxycarbonyl (Bzl, Cbz) protecting group on the amino function, giving a chiral amino acid ester salt with a defined stereocenter at the alpha carbon. The molecule contains a protected carbamate (N-Cbz) that suppresses undesired amine reactivity during esterification, coupling, and side reactions, while the methyl ester provides a controlled C-terminal handle for subsequent peptide bond formation or ester-to-amide conversion. The hydrochloride counterion stabilizes the amino functionality as a salt form, improving handling of this chiral amino acid intermediate in synthetic workflows. The combination of Cbz protection and ester functionality makes Bzl-L-Ala-OMe*HCl suitable for protected amino acid synthesis, peptide building block preparation, and downstream transformations that require predictable functional-group chemoselectivity.

1. Peptide Synthesis

Bzl-L-Ala-OMe*HCl is applied in peptide synthesis workflows where a protected L-alanine methyl ester serves as a C-terminally functionalized building block. The N-Cbz carbamate protects the stereogenic amino acid from side reactions during peptide coupling, while the methyl ester can be converted into an activated carboxyl equivalent for amide bond formation using standard peptide coupling strategies. The defined L-configuration supports stereochemically consistent incorporation into peptide chains, enabling construction of Ala-containing sequences for research-grade peptide libraries and reference standards. The hydrochloride salt form can be leveraged for robust intermediate handling during protection/deprotection and coupling planning, supporting reproducible protected amino acid chemistry.

2. Protected Amino Acids

Bzl-L-Ala-OMe*HCl is used as a protected amino acid intermediate in synthetic organic chemistry and biochemical reagent preparation. The Cbz (benzyloxycarbonyl) group provides a removable N-protecting strategy compatible with hydrogenolysis conditions, allowing controlled deprotection to reveal the free amine when assembling longer peptides or conducting selective conjugation steps. The methyl ester functionality enables staged derivatization, including conversion to carboxylic acid derivatives or direct participation in peptide coupling routes designed around ester activation. The chiral amino acid ester salt format supports process planning for fine chemical synthesis, where stable, isolable intermediates are required for sequential transformations without premature amide formation.

3. Chiral Building Block Development

Bzl-L-Ala-OMe*HCl is employed as a chiral amino acid intermediate for stereocontrolled synthesis of alanine-containing fragments used in peptide science and peptidomimetic construction. The L-alpha stereocenter is preserved through protected amine handling, enabling downstream synthesis of stereochemically defined analogs where alanine stereochemistry influences conformational preferences and binding-site recognition. The protected carbamate and ester groups provide orthogonal functional-group management, supporting stepwise modification such as ester hydrolysis or activation while maintaining N-protection until the final assembly stage. The resulting alanine fragment can be incorporated into larger chiral scaffolds for structure-activity relationship studies and synthetic methodology development in amino acid derivatization.

4. Chemical Biology Reagents

Bzl-L-Ala-OMe*HCl is suitable for chemical biology research requiring defined amino acid-derived motifs that can be incorporated into labeled peptides or biomolecule-interacting constructs. The Cbz-protected amine and methyl ester enable conversion into peptide-ready intermediates that can later be deprotected to generate reactive amine or carboxyl functionalities for conjugation chemistry. The stereodefined alanine unit can serve as a building block in peptide probes designed to probe protein interactions, enzyme recognition, or substrate specificity in vitro. The controlled functional-group reactivity supports preparation of standardized intermediates for biochemical research, including peptide analogs used in assay development and molecular recognition studies.

5. Pharmaceutical Manufacturing Intermediates

Bzl-L-Ala-OMe*HCl can be incorporated into pharmaceutical intermediate supply chains for manufacturing-oriented synthesis of alanine-containing peptides and peptide fragments. The N-Cbz protection strategy supports chemoselective processing steps by minimizing amine side reactions during activation, coupling, and purification stages typical of process chemistry intermediate preparation. The methyl ester provides a defined C-terminal functionality that can be transformed into activated carboxyl forms or converted into amide linkages as part of controlled peptide assembly. The hydrochloride salt form can facilitate handling and consistent dosing of chiral building blocks in synthetic operations, supporting scalable production of protected amino acid derivatives used in peptide-based manufacturing routes.

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