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Atazanavir EP Impurity J is chemically Tert-butyl 2-[(2S,3S)-3-(tert-butoxyformamido)-2-hydroxy-4-phenylbutyl]-2-[[4-(pyridin-2-yl)phenyl]methyl]hydrazine-1-carboxylate (as per EP).
It is also known as Atazanavir di-tert-butyl analog (USP) ; Des-N-(methoxycarbonyl)-L-tert-leucine Bis-Boc Atazanavir.
Atazanavir EP Impurity J is supplied with detailed characterization data compliant with regulatory guideline. Atazanavir EP Impurity J can be used for the analytical method development, method validation (AMV), Quality Controlled (QC) application for Abbreviated New Drug Application (ANDA) or during commercial production of Atazanavir.

The product can be used as reference standards and further traceability against pharmacopeial standards (USP or EP) can be provided based on feasibility. ISP Standards products are for analytical purpose only and not for human use.