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benzyl-L-isoleucine; CAS No.: 1859-49-0; benzyl-L-isoleucine. PROPERTIES: Benzyl-L-isoleucine appears as a white to off-white crystalline powder with a slight amino acid odor. Its molecular formula is C12H17NO3, corresponding to a molecular weight of approximately 223.28 g/mol. The compound exhibits a melting point in the range of 150-153 C and demonstrates moderate solubility in water and polar organic solvents such as methanol and dimethylformamide. It is stable under normal laboratory conditions but should be protected from prolonged exposure to moisture and heat. Proper storage involves keeping it in a tightly sealed container at room temperature (15-25 C) in a dry environment. Safety considerations include wearing appropriate protective equipment as the compound may cause skin and eye irritation. Inhalation of dust should be avoided, and in case of accidental exposure, thorough washing with water and medical consultation is advised. APPLICATIONS: Benzyl-L-isoleucine functions as a specialized intermediate in peptide synthesis, particularly valuable in the preparation of bioactive peptides and protein analogs. Its benzyl substituent and isoleucine backbone provide structural features important for receptor binding and bioactivity (Journal of Peptide Science). In medicinal chemistry, benzyl-L-isoleucine serves as a building block for creating anticancer agents and enzyme inhibitors, leveraging its structural similarity to natural amino acids to enable selective targeting of protein kinases (Bioorganic & Medicinal Chemistry Letters). Additionally, the compound finds application in the development of fluorescent probes for bioimaging, where its amino acid backbone allows for selective labeling of biological targets such as proteins and lipids (Analytical Chemistry). It is also employed in the synthesis of certain agrochemicals, though specific applications in this area are limited to non-agricultural research settings (Pest Management Science).