Epinastine Impurity 40 CAS CATO-C4X-184040

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-184040
Molecular FormulaC22H20N2O
Molecular Weight328.41 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Epinastine Impurity 40 CAS CATO-C4X-184040 chemical structure

Description

CATO manufactures Epinastine Impurity 40 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.

Epinastine Impurity 40 (CAS CATO-C4X-184040) is a certified pharmaceutical impurity reference standard with the molecular formula C22H20N2O and a molecular weight of 328.41 g/mol.

Structurally, Epinastine Impurity 40 (C22H20N2O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 328.41 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

Physical & Chemical Properties

Molecular FormulaC22H20N2O
Molecular Weight328.41 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)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms2

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