Ensifentrine impurity 50 CAS 39201-71-3

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.39201-71-3
Molecular FormulaC18H22N2O
Molecular Weight282.38 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ensifentrine impurity 50 CAS 39201-71-3 chemical structure

Description

CATO manufactures Ensifentrine impurity 50 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.

Ensifentrine impurity 50 (CAS 39201-71-3) is a certified pharmaceutical impurity reference standard with the molecular formula C18H22N2O and a molecular weight of 282.38 g/mol.

Ensifentrine impurity 50 (C18H22N2O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; 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 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.

Physical & Chemical Properties

Molecular FormulaC18H22N2O
Molecular Weight282.38 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1968
Nitrogen Atoms2

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