L-3-(3-Thienyl)alanine
Overview
L-3-(3-Thienyl)alanine is a synthetic amino acid derivative where the side chain contains a thiophene ring instead of the conventional aliphatic or aromatic groups found in proteinogenic amino acids. This structural modification gives the compound unique chemical properties that make it valuable in specialized applications. As a non-proteinogenic amino acid, it is not incorporated into natural proteins but serves as an important building block in medicinal chemistry and peptide research. The L-configuration at the α-carbon makes it particularly useful for creating stereospecific compounds in pharmaceutical development.
Physical and Chemical Properties
L-3-(3-Thienyl)alanine exhibits typical amino acid characteristics including zwitterionic behavior in aqueous solutions and amphoteric properties. The thiophene ring contributes aromatic character and influences the compound's electronic properties, making it more lipophilic than standard aliphatic amino acids. The compound shows moderate stability under standard conditions but may degrade upon prolonged exposure to light or elevated temperatures. Its solubility profile allows for flexible handling in both aqueous and certain organic solvent systems, which is advantageous for synthetic applications. The melting point with decomposition indicates thermal instability at higher temperatures.
Main Applications
In pharmaceutical research, L-3-(3-Thienyl)alanine serves as a key intermediate for developing peptide-based drugs and enzyme inhibitors. Its thiophene moiety can enhance binding affinity to certain biological targets or modify pharmacokinetic properties of lead compounds. The compound finds use in materials science for creating functionalized polymers and in asymmetric synthesis as a chiral auxiliary. Research institutions employ it as a probe to study enzyme mechanisms and protein-ligand interactions where conventional amino acids are ineffective.
Safety and Storage
While not classified as extremely hazardous, L-3-(3-Thienyl)alanine requires careful handling due to potential irritant effects. Standard laboratory precautions including gloves, eye protection and proper ventilation should be observed when working with this chemical. For long-term storage, the material should be kept in tightly sealed containers under inert atmosphere when possible. Desiccants are recommended to prevent moisture absorption. The product is stable for several years when stored at room temperature away from direct sunlight and oxidizing agents.
B2B Procurement Guide
When sourcing L-3-(3-Thienyl)alanine, buyers should clearly specify required purity levels (typically 95-99%), enantiomeric excess (usually ≥98% ee), and any special packaging requirements. Technical data sheets and certificates of analysis should be requested for quality verification. Lead times for custom syntheses can be significant, so advanced planning is advised. Buyers may consider establishing relationships with specialized fine chemical suppliers who can provide consistent quality and technical support. Minimum order quantities often apply for this niche product.
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