Cbz-4-Trifluoromethyl-L-Phenylalanine is a Cbz-protected, L-phenylalanine-derived amino acid featuring a phenyl side chain substituted with a 4-trifluoromethyl group, placing a strongly electron-withdrawing CF3 substituent on the aromatic ring. The molecule contains a carbamate-protected amino group (Cbz) and a free carboxylic acid, with the L stereochemical configuration indicated by the product name and an otherwise unmodified α-carbon framework. In peptide chemistry, this protected amino acid is used as a building block for incorporating the 4-trifluoromethyl phenylalanine residue into peptides or peptide-related intermediates, where the Cbz group helps control chemoselectivity during stepwise assembly and the CF3-bearing aromatic side chain supports structure-activity and labeling studies.
CAT No: CP16808
Cbz-4-Trifluoromethyl-L-Phenylalanine is an N-Cbz protected L-phenylalanine derivative bearing a para-trifluoromethyl substituent on the aromatic side chain. The molecule contains a stereogenic alpha-carbon typical of amino acid chemistry, with the Cbz carbamate masking the amino function while the carboxyl group is available for downstream conversion into coupling-ready forms. The electron-withdrawing CF3 group modulates aromatic reactivity and can influence acidity, hydrogen-bonding patterns, and chromatographic behavior during protected amino acid synthesis and purification. The combination of a stable carbamate protecting group and a functionalized aromatic ring makes the compound suitable for peptide building block preparation, chiral intermediate workflows, and synthetic diversification toward fluorinated amino acid analogs.
1. Peptide Synthesis
Cbz-4-Trifluoromethyl-L-Phenylalanine is used in peptide coupling workflows where N-Cbz protection supports orthogonal protection strategies during stepwise assembly. The L-phenylalanine backbone provides the alpha-amino stereocenter and carboxyl functionality needed for conversion to activated derivatives that participate in amide bond formation. The para-CF3 substituted phenyl side chain can be retained through carbamate stability and can be incorporated into peptide sequences to generate fluorinated analogs for structure-activity relationship studies. Downstream deprotection of the Cbz group enables sequential coupling cycles and supports the construction of peptidomimetics and fluorinated peptide scaffolds for biochemical research.
2. Side-Chain Functionalization
Cbz-4-Trifluoromethyl-L-Phenylalanine serves as a chiral aromatic amino acid intermediate for side-chain derivatization routes that preserve stereochemistry at the alpha-carbon. The para-trifluoromethyl group provides a fluorinated handle that can be leveraged to tune lipophilicity and metabolic stability in synthetic targets while the aromatic ring supports further functional group installation via electrophilic or transition-metal-mediated transformations. The protected amine reduces undesired side reactions during aromatic modification, allowing controlled conversion of the carboxyl group into amide, ester, or activated intermediates after side-chain elaboration. The resulting fluorinated amino acid derivatives can be carried into medicinal chemistry programs, peptidomimetic synthesis, and fragment-based molecular design where aromatic fluorination is used to modulate molecular recognition.
3. Chiral Building Block Development
Cbz-4-Trifluoromethyl-L-Phenylalanine is applied as a stereodefined chiral amino acid intermediate for constructing fluorinated chiral frameworks in synthetic organic chemistry. The L-configuration at the alpha-carbon enables consistent stereochemical outcomes when the carboxyl functionality is transformed into peptide coupling reagents or other acylating agents. The N-Cbz carbamate offers a robust protecting-group strategy that can survive conditions used for intermediate formation while remaining removable under standard deprotection approaches to reveal the free amino group when needed. The CF3-substituted aromatic side chain contributes to predictable physicochemical properties, supporting downstream synthesis of chiral fluorinated amides, peptide analogs, and research intermediates used for stereochemical and conformational studies.
4. Chemical Biology Labeling
Cbz-4-Trifluoromethyl-L-Phenylalanine can be incorporated into chemical biology constructs where fluorinated aromatic residues support spectroscopic tracking, affinity tuning, or probe design. The protected amino acid format enables controlled introduction into peptide-like ligands through amide bond formation while maintaining compatibility with orthogonal protecting-group schemes. The CF3-bearing phenyl side chain can influence local hydrophobicity and binding microenvironments, which may be exploited when generating labeled peptide analogs or biomolecule-binding fragments. The Cbz-protected amine also facilitates stepwise assembly of conjugatable intermediates that can be further functionalized for downstream biomolecule modification workflows.
5. Pharmaceutical Intermediate Preparation
Cbz-4-Trifluoromethyl-L-Phenylalanine is suitable for pharmaceutical intermediate preparation in fine chemical and process chemistry contexts that require fluorinated amino acid building blocks. The N-Cbz carbamate and carboxyl functionality support manufacturing-compatible protection and activation sequences for producing coupling-ready derivatives used in peptide-like API intermediates and fluorinated scaffold synthesis. The para-CF3 aromatic substituent can be retained as a stable structural element through common intermediate transformations, enabling consistent incorporation into larger molecules without altering the stereogenic center. The compound's protected amino acid architecture aligns with industrial planning for orthogonal deprotection and controlled formation of amide linkages during multi-step synthesis.
6. Analytical Research Standards
Cbz-4-Trifluoromethyl-L-Phenylalanine is used in analytical research as a defined fluorinated amino acid reference material for method development and impurity profiling in amino acid derivative analysis. The Cbz-protected amine and CF3-substituted aromatic side chain create a characteristic chromatographic and mass spectrometric signature that can support LC-MS identification of related protected amino acids, coupling intermediates, and deprotection products. The stereochemically defined L-configuration also helps distinguish enantiomeric or diastereomeric species when chiral separation strategies are applied. The compound can therefore serve as a practical standard for monitoring protected amino acid synthesis, peptide building block preparation, and downstream transformation consistency in laboratory and industrial quality workflows.
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