3-(3-Pyrrolyl)-DL-alanine is a DL-form amino acid derivative in which the side chain is substituted with a 3-pyrrolyl group, while the molecule retains the amino and carboxylate functionality characteristic of alanine analogues. The compound bears a primary amino group and a carboxylic acid (or its conjugate acid/base form depending on isolation), and the "DL" designation indicates a racemic mixture of stereoisomers at the alanine stereocenter. As a non-proteinogenic, heteroaryl-containing amino acid, it is used in peptide synthesis and structure-activity or chemical biology studies to introduce a pyrrolyl side chain for tuning polarity, aromatic/heteroaromatic interactions, and labeling or conjugation handles in amino acid and peptide derivatives.
CAT No: CP23403
3-(3-Pyrrolyl)-DL-alanine is a DL amino acid bearing a 3-pyrrolyl side chain, providing a heteroaromatic functionality that can be leveraged in heterocycle-rich peptide and peptidomimetic design. As a racemic (DL) building block, it is frequently used when stereochemical uniformity is not required, such as in library synthesis, SAR screening, and intermediate preparation for further functionalization. The presence of the pyrrolyl ring offers a distinct electronic and hydrogen-bonding profile compared with standard aliphatic side chains, making it useful for medicinal chemistry and chemical biology programs that explore aromatic/heteroaromatic substitution patterns.
1. Peptidomimetic Building Block
3-(3-Pyrrolyl)-DL-alanine is used as a heteroaromatic amino acid building block for constructing peptidomimetics and short peptide-like scaffolds in medicinal chemistry and structure-activity relationship (SAR) studies. Researchers incorporate the pyrrolyl side chain to introduce a polar, heteroaromatic motif that can participate in hydrogen bonding and shape recognition within binding-site models. The DL stereochemistry supports exploratory synthesis and rapid analog generation when the focus is on side-chain effects rather than enantiopure stereochemical optimization, enabling efficient production of libraries for hit-to-lead workflows and SAR mapping.
2. Heteroaromatic Peptide Synthesis
3-(3-Pyrrolyl)-DL-alanine is applied in custom peptide synthesis workflows where a heteroaromatic residue is required to probe sequence-dependent properties such as local polarity, aromatic stacking tendencies, and conformational preferences. Peptide chemists use this amino acid to assemble modified sequences for biochemical assays, receptor-binding studies, and material-binding investigations where conventional aliphatic residues would not reproduce the desired side-chain chemistry. The pyrrolyl functionality also supports downstream derivatization strategies, allowing the same residue concept to be carried into analog series that vary heteroaromatic substitution or conjugation chemistry.
3. Pharmaceutical Intermediate Development
3-(3-Pyrrolyl)-DL-alanine is commonly used as an intermediate building block in pharmaceutical intermediate development programs that require incorporation of a pyrrolyl-containing amino acid motif into larger synthetic targets. Process and R&D chemists select this compound when a heteroaromatic side chain needs to be introduced early or when it serves as a platform for subsequent transformations to diversify side-chain electronics and hydrogen-bonding capacity. In industrial and scale-up-oriented settings, the DL form can be advantageous for feasibility studies and route scouting, particularly when stereochemical resolution is deferred to later stages or when the target synthesis tolerates racemic intermediates.
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