2-Amino-DL-Phenylalanine contains an α-amino group and a carboxyl group attached to a benzyl-substituted side chain, classifying it as a phenylalanine-type amino acid derivative in the free amino acid form. The "DL" designation indicates a racemic mixture of D and L stereoisomers at the α-carbon, and the aromatic side chain provides a hydrophobic, π-interacting functional group that can participate in peptide secondary-structure and binding studies when incorporated into larger molecules. As a chemically defined phenylalanine building block, it is used in peptide synthesis workflows and in analytical or labeling contexts where a mixture of stereoisomers is required for structure-activity studies, substrate analog preparation, or comparative studies of stereochemical effects.
CAT No: CP10703
2-Amino-DL-Phenylalanine is an amino acid building block supplied as a DL mixture, combining D- and L-phenylalanine stereoisomers with a benzyl side chain and a free amino group. This stereochemical form is frequently selected when the downstream process does not require strict enantiopurity, such as early-stage medicinal chemistry synthesis, racemic peptidomimetic development, and non-stereospecific analytical method work. The aromatic side chain provides a robust handle for aromatic ring-based interactions and for incorporation into peptides and peptide-like scaffolds after appropriate activation or protection.
1. Peptidomimetic Building Blocks
2-Amino-DL-Phenylalanine is used as a phenylalanine source for constructing peptide-like molecules and peptidomimetics where a racemic mixture is acceptable at the development stage. Medicinal chemistry groups commonly incorporate this building block into solution-phase or solid-phase peptide assembly workflows to generate analog libraries for structure-activity relationship studies, especially when the aromatic benzyl side chain is the key structural element being varied. The DL configuration supports streamlined synthesis of racemic candidates without requiring separate enantiomer procurement during early screening and scaffold exploration.
2. Pharmaceutical Intermediate Synthesis
2-Amino-DL-Phenylalanine serves as a practical intermediate for preparing downstream aromatic amino acid derivatives used in process chemistry and specialty chemical manufacturing. Pharmaceutical intermediate development teams often rely on racemic amino acid inputs to reduce supply complexity while producing protected amino acid intermediates, activated derivatives, or side-chain-functionalized intermediates for subsequent coupling steps. The benzyl side chain and primary amino functionality make it a common starting point for building aromatic-containing intermediates used in the synthesis of peptidic and peptidomimetic motifs.
3. Racemic Analytical Standards
2-Amino-DL-Phenylalanine is frequently employed to support analytical method development and calibration work where enantiomer separation is not required or where racemic reference material is appropriate. Analytical chemistry laboratories use it as a starting material for preparing derivatized standards, internal calibrants, or method controls in workflows such as amino acid profiling by chromatography-based techniques. The presence of both D- and L-forms makes it useful for validating total phenylalanine measurements, ensuring correct response over the combined population when stereospecific quantification is not the primary objective.
4. Chiral Synthesis Starting Material
2-Amino-DL-Phenylalanine is also used as a starting chiral feedstock for downstream resolution strategies and stereochemical diversification in synthetic development. Chemical development teams may convert the DL mixture into protected or activated derivatives and then apply a resolution or stereoselective transformation in later steps to access a specific stereoisomer as part of a broader synthetic route. This approach is commonly adopted when the initial route benefits from using a readily available racemate, while enantiopure material is generated only if and when the project requires stereochemical specificity.
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