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For chemists engaged in synthesis and research, a deep understanding of the reagents they employ is fundamental. Fmoc-L-Asparagine (CAS 71989-16-7) is a prime example of a fine chemical whose specific properties dictate its utility across diverse scientific disciplines, most notably in peptide chemistry.
Chemically, Fmoc-L-Asparagine is defined by its molecular formula C19H18N2O5 and a molecular weight of approximately 354.36 g/mol. Its structure features an L-Asparagine backbone, with the alpha-amino group protected by the bulky and base-labile fluorenylmethoxycarbonyl (Fmoc) group. This Fmoc moiety is key to its application in Fmoc solid-phase peptide synthesis (SPPS), a workhorse technique in modern biochemistry and medicinal chemistry.
The physical properties of Fmoc-L-Asparagine are also significant. Typically appearing as a white powder, its melting point is reported around 190 °C (with decomposition), indicating its solid state and thermal stability within typical laboratory conditions. The optical rotation, often measured at -13° (c=1, DMF), is a critical indicator of its stereochemical integrity, confirming it as the L-enantiomer, which is essential for biological activity and correct peptide sequencing.
Its solubility characteristics are also important for synthetic chemists. While it may vary slightly, Fmoc-L-Asparagine is generally soluble in common organic solvents used in peptide synthesis, such as Dimethylformamide (DMF), facilitating its incorporation into reaction mixtures. This solubility, combined with the facile removal of the Fmoc group under mild basic conditions (e.g., using piperidine), makes it an exceptionally convenient building block.
Beyond its primary role in SPPS for generating peptides, Fmoc-L-Asparagine finds applications in the synthesis of peptide conjugates, modified peptides for biochemical studies, and as a reference standard in analytical chemistry. For researchers looking to buy Fmoc-L-Asparagine, consulting the detailed specifications provided by a reputable Fmoc-L-Asparagine supplier, such as purity, optical rotation, and melting point, ensures the reagent's suitability for their specific chemical processes. As a dedicated provider of high-quality chemical intermediates, we ensure our Fmoc-L-Asparagine meets these stringent scientific requirements, empowering chemists to achieve precise and reliable synthetic outcomes.
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