(S)-3-Phenyl-2-(pyrazine-2-carboxamido)propanoic acid CAS NO.114457-94-2

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Bortezomib intermediate. Bortezomib is a reversible inhibitor of 26S proteasome chymotrypsin-like activity in mammalian cells. Proteolysis can affect the cascade of multilevel signals in the cell, and this damage to the normal intracellular environment can lead to cell death. Inhibition of the 26S proteasome prevents hydrolysis of specific proteins. In vitro tests have proven that bortezomib is cytotoxic to many types of cancer cells. Preclinical tumor model in vivo tests have demonstrated that bortezomib can delay tumor growth, including multiple myeloma. Bortezomib can be used in the treatment of patients with multiple myeloma.