3-Amino-DL-Phenylalanine is a free amino acid derivative classified as a phenylalanine analogue, featuring an α-amino group and a carboxyl group attached to a benzyl side chain (phenylmethyl). The "DL" designation indicates a racemic mixture of stereoisomers at the α-carbon, and the molecule bears no additional protecting groups, allowing both amino and carboxyl functionalities to participate in standard amino-acid chemistry. It is used in peptide and amino-acid derivative synthesis as a substrate building block for preparing mixed or stereochemically defined peptide analogues, as well as in analytical method development where racemic phenylalanine-like structures are required.
CAT No: CP10803
3-Amino-DL-Phenylalanine is an amino acid building block featuring a stereochemical mixture (DL) at the α-carbon and a phenyl side chain characteristic of phenylalanine derivatives. It contains both an amino group and a carboxylic acid functionality, making it a practical precursor for downstream derivatization and for assembling substituted amino-acid frameworks in medicinal chemistry and peptide-related synthesis. Researchers commonly select this DL form when they need access to the phenylalanine scaffold without committing to a single enantiomer early in development.
1. Pharmaceutical Intermediate Synthesis
3-Amino-DL-Phenylalanine is used as a practical intermediate for constructing substituted phenylalanine-like motifs in small-molecule and peptidomimetic chemistry. Medicinal chemistry groups and custom synthesis teams incorporate this scaffold into analog libraries where the phenyl side chain and the amino acid functional handles support conversion into amide, ester, or protected amino derivatives during lead optimization. The DL stereochemical mixture is often chosen at early discovery stages when rapid parallel synthesis is prioritized and stereochemical resolution can be deferred to later steps.
2. Peptidomimetic Building Blocks
3-Amino-DL-Phenylalanine supports the preparation of peptidomimetic structures and amino-acid-derived fragments that retain the phenyl side-chain topology of phenylalanine. Chemical biology and peptide development teams use it to generate non-native linkers, constrained analogs, or side-chain-functionalized intermediates that can be incorporated into larger synthetic sequences. Because the compound provides the core amino acid functionality in a single material, it is frequently selected for building block workflows where consistent handling of the amino and carboxyl groups simplifies downstream assembly.
3. Chiral Resolution and Derivatization
3-Amino-DL-Phenylalanine is commonly used in workflows aimed at stereochemical differentiation, including derivatization strategies that enable separation of enantiomers or downstream conversion into chiral intermediates. Analytical chemistry and process development groups may start from the DL mixture to establish practical separation conditions, generate diastereomeric derivatives, or screen downstream transformations that depend on stereochemical identity. This makes the compound a convenient starting point when the development plan requires access to both stereoisomeric forms before selecting a specific enantiomer for scale-up.
4. Amino Acid Derivative Libraries
3-Amino-DL-Phenylalanine is well suited to the rapid generation of amino acid derivative libraries used in structure-property studies and method development. Researchers prepare substituted derivatives through functional group transformations of the amino and carboxylic acid functionalities, enabling systematic variation of polarity, protecting group patterns, or coupling-ready forms. Such derivative collections are frequently used by materials and chemistry teams to support downstream coupling reactions, reference compound preparation, and comparative evaluation of reactivity across closely related amino-acid analogs.
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