Fesoterodine Impurity 18 CAS 168335-36-2

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.168335-36-2
Molecular FormulaC15H25N
Molecular Weight219.37 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Fesoterodine Impurity 18 CAS 168335-36-2 chemical structure

Description

CATO supplies Fesoterodine Impurity 18 (CAS 168335-36-2), a pharmacopoeial impurity reference standard (molecular formula C15H25N, MW 219.37 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Fesoterodine Impurity 18 (C15H25N) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

CATO manufactures Fesoterodine Impurity 18 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 FormulaC15H25N
Molecular Weight219.37 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2005
Nitrogen Atoms1

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