L-Alanine Benzyl Ester p-Toluenesulfonate
L-Alanine Benzyl Ester p-Toluenesulfonate, identified by CAS number 42854-62-6, represents a significant chemical intermediate within the domain of organic synthesis and peptide chemistry. This compound is the p-toluenesulfonate salt of the benzyl-protected form of the naturally occurring amino acid L-alanine. The incorporation of the tosylate salt moiety enhances the stability and crystallinity of the material, facilitating precise weighing and long-term storage under standard laboratory conditions compared to its free base counterpart. Chemically, the benzyl ester serves as a robust protecting group for the C-terminus, allowing for selective chemical modifications at the N-terminus or side chain without interfering with the carboxylic acid functionality. As a high-purity raw material, it is indispensable for researchers and industrial manufacturers focused on the development of complex peptides, pharmaceutical precursors, and specialized biochemical reagents. Its consistent reactivity and structural integrity make it a reliable building block for synthesizing diverse molecular architectures in medicinal chemistry and biotechnology applications.
• In the field of peptide synthesis, this compound serves as a crucial building block where the benzyl ester provides effective protection for the C-terminal carboxylic acid. This allows for the sequential addition of amino acids via peptide coupling reactions while preventing unwanted side reactions at the alanine C-terminus. The tosylate salt form ensures the amine remains protonated and stable until the coupling step, at which point it can be liberated in situ by the addition of a base, ensuring high yields and purity in the final peptide sequence.
• Within pharmaceutical research and development, L-Alanine Benzyl Ester p-Toluenesulfonate is utilized as a versatile intermediate for the construction of diverse drug candidates. It is particularly valuable in the synthesis of peptidomimetics and prodrugs where the alanine moiety is a structural requirement. The ease of removing the benzyl group via hydrogenolysis makes it an attractive choice for synthetic routes requiring mild deprotection conditions that preserve other sensitive functional groups within the molecule.
• The material is also applied in the production of specialized biochemical reagents and enzymatic substrates. By serving as a starting material for alanine-containing derivatives, it aids in the study of protease specificity and enzyme kinetics. Its high degree of optical purity is essential for maintaining the stereochemical integrity of the resulting compounds, which is critical for biological activity and accurate analytical results in diagnostic and research settings.
Product Name: L-Alanine Benzyl Ester p-Toluenesulfonate
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