N-Me-D-Asp-OH is an N-methylated D-aspartic acid derivative bearing a side-chain carboxylic acid characteristic of the Asp family and a backbone bearing an amino group and a free carboxyl group. The molecule features an N-methyl substituent that converts the amino functionality to a secondary amide-like nitrogen (reducing typical primary amino reactivity), while the stereochemistry is specified as D at the α-carbon and the side chain remains a carboxylic acid for acid-base behavior and potential salt formation. As a non-proteinogenic, chemically modified amino acid, it is used as a building block or reference material in peptide and peptidomimetic synthesis and in analytical or labeling workflows where an N-methylated aspartate motif is required to probe structure-property relationships or to control amide formation and conformational effects during assembly of amino acid derivatives.
N-Me-D-Asp-OH is a stereochemically defined D-aspartic acid derivative bearing an N-methylated amino group and a free carboxylic acid, giving a chiral amino acid scaffold with reduced N-H acidity and altered hydrogen-bonding behavior. The aspartate side chain provides an additional carboxyl functionality, enabling controlled salt formation, pH-dependent solubility, and selective coupling-site availability when protected or activated. The N-methyl substitution changes amide formation kinetics and can influence peptide-bond conformations in downstream constructs, making N-Me-D-Asp-OH relevant for stereodefined peptide analog design. As an amino acid building block and chiral intermediate, N-Me-D-Asp-OH can be converted into protected derivatives for peptide coupling chemistry and further functional group transformations at the side-chain carboxyl group.
1. Peptide Synthesis
N-Me-D-Asp-OH supports peptide building block preparation for solid-phase peptide synthesis and solution-phase coupling strategies by providing a D-configured aspartate core with an N-methylated amine that can be incorporated as a residue with modified backbone hydrogen-bonding patterns. The presence of two carboxylic acid groups enables selective protection and activation approaches, allowing one carboxyl to be engaged in amide bond formation while the other is masked or left to direct regioselective derivatization. N-methyl substitution can be leveraged to tune coupling outcomes and the conformational preferences of resulting peptide bonds during peptidomimetic construction. Incorporation of D-aspartate stereochemistry is useful for generating epimerically controlled peptide analogs for method development and structure-function studies in peptide chemistry.
2. Amino Acid Derivatization
N-Me-D-Asp-OH serves as a practical intermediate for amino acid derivatization workflows that target side-chain carboxyl functionalization and downstream synthetic utility. The aspartate side-chain carboxyl group can be transformed into activated esters, amides, or linkers after appropriate protection-state management, while the N-methylated amino moiety can be carried through as a stable motif during multi-step synthesis. The free carboxyl functionality supports salt formation and can be used to control solubility during purification and coupling planning. Derivatives prepared from N-Me-D-Asp-OH can feed into fragment-based molecular design, peptide conjugation handles, and chiral intermediate libraries used in synthetic organic chemistry and biochemical research.
3. Chemical Biology Labeling
N-Me-D-Asp-OH is suitable for chemical biology applications where stereodefined amino acid analogs are used to probe binding-site recognition and to introduce defined physicochemical features into biomolecule scaffolds. The D-configuration and N-methylated backbone element can modulate local conformational constraints, which may affect incorporation into peptide probes or receptor-binding motifs. The two carboxyl groups enable controlled conjugation chemistry when converted to protected or activated forms, supporting attachment of linkers for affinity reagents or imaging-tag intermediates. N-Me-D-Asp-OH-derived constructs can be employed as research intermediates for biochemical assay development, molecular recognition studies, and stereochemical controls in chemical probe synthesis.
4. Protein Engineering
N-Me-D-Asp-OH can be applied in protein engineering and peptide/protein mimic design where incorporation of D-amino acid residues and N-methylated backbone elements is used to tune stability, protease resistance, and conformational presentation. The aspartate side-chain carboxyl group provides a handle for introducing charge-defined interactions, including carboxylate-mediated contacts or further derivatization into side-chain-linked functionalities. Protection-group strategies for the carboxyl groups can enable selective coupling to N-terminus or side-chain-modified frameworks during scaffold assembly. N-Me-D-Asp-OH therefore functions as a chiral amino acid intermediate for constructing stereochemically controlled protein-mimetic sequences and for generating defined analogs used in protein structure studies.
5. Pharmaceutical Intermediate Preparation
N-Me-D-Asp-OH is relevant to pharmaceutical intermediate preparation for manufacturing-oriented fine chemical synthesis routes that require stereochemically defined amino acid derivatives with controlled functional-group reactivity. The D-aspartate stereocenter and N-methylated amine can be carried through as a stable chiral motif while converting carboxylic acids into coupling-ready forms for incorporation into peptide-like intermediates. Selective protection and activation of the side-chain carboxyl group supports controlled downstream transformations toward amide-linked fragments and peptidomimetic scaffolds used in process chemistry development. N-Me-D-Asp-OH-derived intermediates can also support analytical method development by providing stereochemically consistent reference material for amino acid derivative characterization in industrial chemical workflows.
6. Process Chemistry Intermediates
N-Me-D-Asp-OH can be employed as a process chemistry intermediate in industrial chemical manufacturing contexts where predictable handling of chiral amino acid functionality is required. The N-methyl substitution reduces the presence of an N-H donor, which can influence reaction selectivity during protection, activation, and coupling steps, supporting reproducible intermediate formation under controlled conditions. The dual carboxyl functionalities enable design of manufacturing routes that rely on orthogonal protection strategies, allowing one carboxyl to be activated for coupling while the other is held in a protected state for later conversion. N-Me-D-Asp-OH thus serves as a stereodefined input for producing protected amino acid derivatives and downstream peptide-building blocks used in specialty chemical production and industrial synthesis planning.
If you have any peptide synthesis requirement in mind, please do not hesitate to contact us at . We will endeavor to provide highly satisfying products and services.
Creative Peptides is a trusted CDMO partner specializing in high-quality peptide synthesis, conjugation, and manufacturing under strict cGMP compliance. With advanced technology platforms and a team of experienced scientists, we deliver tailored peptide solutions to support drug discovery, clinical development, and cosmetic innovation worldwide.
From custom peptide synthesis to complex peptide-drug conjugates, we provide flexible, end-to-end services designed to accelerate timelines and ensure regulatory excellence. Our commitment to quality, reliability, and innovation has made us a preferred partner across the pharmaceutical, biotechnology, and personal care industries.
Read More