Semaglutide Impurity 166 CAS 1395881-03-4

Purity 95%In StockPharmacopoeial Impurity Standards
CAS No.1395881-03-4
Molecular FormulaC39H70BrN5O13
Molecular Weight896.90 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Semaglutide Impurity 166 CAS 1395881-03-4 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 Semaglutide Impurity 166.

Semaglutide Impurity 166 (CAS 1395881-03-4) is a certified pharmaceutical impurity reference standard with the molecular formula C39H70BrN5O13 and a molecular weight of 896.90 g/mol.

Based on its molecular formula C39H70BrN5O13, Semaglutide Impurity 166 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 896.90 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

CATO manufactures Semaglutide Impurity 166 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 FormulaC39H70BrN5O13
Molecular Weight896.90 g/mol
Purity95%
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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1991
Halogen ContentBr-containing
Nitrogen Atoms5

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