L-Isoleucyl-L-leucyl-L-asparaginyl-L-leucyl-L-asparaginyl-L-isoleucine CAS 918159-52-1

Purity 97%+In StockPharmaceutical Standards
CAS No.918159-52-1
Molecular FormulaC32H58N8O9
Molecular Weight698.85 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

L-Isoleucyl-L-leucyl-L-asparaginyl-L-leucyl-L-asparaginyl-L-isoleucine CAS 918159-52-1 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 L-Isoleucyl-L-leucyl-L-asparaginyl-L-leucyl-L-asparaginyl-L-isoleucine.

L-Isoleucyl-L-leucyl-L-asparaginyl-L-leucyl-L-asparaginyl-L-isoleucine (CAS 918159-52-1) is a high-purity analytical reference standard with the molecular formula C32H58N8O9 and a molecular weight of 698.85 g/mol.

The molecular framework of L-Isoleucyl-L-leucyl-L-asparaginyl-L-leucyl-L-asparaginyl-L-isoleucine (C32H58N8O9) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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.

As a certified reference material (CRM), L-Isoleucyl-L-leucyl-L-asparaginyl-L-leucyl-L-asparaginyl-L-isoleucine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC32H58N8O9
Molecular Weight698.85 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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Nitrogen Atoms8

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