Bpoc-Met-OH · DCHA

Bpoc-Met-OH · DCHA is a Boc-like carbamate-protected methionine acid delivered as a dicyclohexylamine (DCHA) salt, presenting a chiral methionine backbone with a side-chain thioether and a free carboxylic acid suitable for amide bond formation after activation. The Bpoc-type N-protection is designed to withstand common peptide coupling conditions while enabling controlled deprotection to regenerate the methionine α-amine for stepwise peptide assembly. The presence of the thioether functional group provides a chemically distinct handle for oxidation-state dependent transformations and side-chain tailoring, while the salt form can improve handling characteristics for protected amino acid synthesis and downstream manufacturing workflows. The combination of stereogenic center, carboxylic acid functionality, and orthogonal N-protection makes Bpoc-Met-OH · DCHA a practical chiral amino acid intermediate for peptide building block preparation and related synthetic chemistry.

1. Protected Amino Acid Chemistry

Bpoc-Met-OH · DCHA is used in protected amino acid synthesis where the N-protected methionine acid form supports controlled peptide coupling chemistry without premature amine participation. The molecule contains a carboxylic acid for activation to acylating intermediates and a Bpoc-type N-protection strategy that can be removed under conditions compatible with peptide synthesis planning. The thioether side chain remains chemically addressable for later functional group modification, enabling side-chain functionalization workflows that start from a stable protected precursor. The DCHA salt form can be leveraged for reproducible solid-state handling during chiral building block preparation and for consistent feedstock behavior in fine chemical synthesis.

2. Peptide Synthesis

Bpoc-Met-OH · DCHA serves as a methionine peptide building block in solid-phase or solution-phase peptide synthesis requiring stereodefined incorporation of an α-amino acid residue. The free carboxylic acid and protected α-amine arrangement allows conversion to activated esters or activated acids for amide bond formation while maintaining orthogonality of the N-protection during chain elongation. The methionine thioether can be carried through peptide assembly as a stable sulfur-containing side chain, supporting subsequent oxidation to sulfoxide or further derivatization when designing methionine-sensitive analogs. The resulting peptide products can be used for biochemical research intermediate generation and for building peptidomimetic scaffolds that require defined sulfur stereochemistry after controlled oxidation steps.

3. Chemical Biology Probes

Bpoc-Met-OH · DCHA can be applied in chemical biology for constructing methionine-containing peptides and peptide analogs used as probes in protein interaction studies and labeling-compatible scaffold development. The thioether side chain provides a sulfur functionality that may undergo oxidation to sulfoxide under controlled conditions, enabling tunable polarity and altered coordination behavior in downstream probe designs. The protected amino acid format supports incorporation into longer peptide sequences where the α-amino acid stereocenter and carboxyl-derived amide linkage are maintained with high structural fidelity. The Bpoc-protected N-terminus strategy supports stepwise synthesis of probe libraries and can facilitate controlled generation of functionalized derivatives for analytical readouts and molecular recognition experiments.

4. Peptidomimetics And SAR Studies

Bpoc-Met-OH · DCHA is suitable for peptidomimetic construction and structure-activity relationship studies that require methionine-like residues with modifiable sulfur chemistry. The protected amino acid backbone enables systematic replacement of natural methionine positions in peptide analogs while preserving the stereochemical environment around the α-amino acid center. The thioether side chain can be transformed into oxidized sulfur states to probe conformational and binding effects, supporting SAR-oriented derivative generation without changing the backbone connectivity. The controlled deprotection of the N-protected amino acid supports iterative synthesis of analog series for fragment-based molecular design and medicinal chemistry lead optimization workflows.

5. Pharmaceutical Intermediate Preparation

Bpoc-Met-OH · DCHA is used as a chiral amino acid intermediate in pharmaceutical intermediate preparation where methionine-containing fragments or peptidic motifs are assembled for downstream active ingredient synthesis. The carboxylic acid functionality enables conversion into coupling-ready intermediates, while the Bpoc-type N-protection supports manufacturing-compatible protection/deprotection sequencing to avoid side reactions during peptide fragment formation. The DCHA salt form can be employed to standardize feedstock handling and to support reproducible solid dosing in process chemistry intermediate manufacture. The sulfur-containing side chain provides a chemically meaningful locus for later transformation during impurity-managed synthesis planning and for controlled generation of defined methionine-derived variants.

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