N-[(2R,4R,5S)-5-[[(1,1-Dimethylethoxy)carbonyl]amino]-4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-oxo-6-phenyl-2-(phenylmethyl)hexyl]-L-leucyl-L-phenylalaninamide CAS 338801-69-7

Purity 97%+In StockPharmaceutical Standards
CAS No.338801-69-7
Molecular FormulaC45H66N4O6Si
Molecular Weight787.11 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

N-[(2R,4R,5S)-5-[[(1,1-Dimethylethoxy)carbonyl]amino]-4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-oxo-6-phenyl-2-(phenylmethyl)hexyl]-L-leucyl-L-phenylalaninamide CAS 338801-69-7 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including N-[(2R,4R,5S)-5-[[(1,1-Dimethylethoxy)carbonyl]amino]-4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-oxo-6-phenyl-2-(phenylmethyl)hexyl]-L-leucyl-L-phenylalaninamide.

N-[(2R,4R,5S)-5-[[(1,1-Dimethylethoxy)carbonyl]amino]-4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-oxo-6-phenyl-2-(phenylmethyl)hexyl]-L-leucyl-L-phenylalaninamide (CAS 338801-69-7), molecular formula C45H66N4O6Si and molecular weight 787.11 g/mol, is a CATO reference standard with documented purity and traceability.

N-[(2R,4R,5S)-5-[[(1,1-Dimethylethoxy)carbonyl]amino]-4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-oxo-6-phenyl-2-(phenylmethyl)hexyl]-L-leucyl-L-phenylalaninamide (C45H66N4O6Si) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

CATO manufactures N-[(2R,4R,5S)-5-[[(1,1-Dimethylethoxy)carbonyl]amino]-4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-oxo-6-phenyl-2-(phenylmethyl)hexyl]-L-leucyl-L-phenylalaninamide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC45H66N4O6Si
Molecular Weight787.11 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)15.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms4

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