Salmeterol EP Impurity F CAS 1391054-40-2

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.1391054-40-2
Molecular FormulaC25H37NO3
Molecular Weight399.57 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Salmeterol EP Impurity F CAS 1391054-40-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 399.57 g/mol gives Salmeterol EP Impurity F distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Salmeterol EP Impurity F (CAS 1391054-40-2) is a certified pharmaceutical impurity reference standard with the molecular formula C25H37NO3 and a molecular weight of 399.57 g/mol.

Based on its molecular formula C25H37NO3, Salmeterol EP Impurity F contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 399.57 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 Salmeterol EP Impurity F 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 FormulaC25H37NO3
Molecular Weight399.57 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1991
Nitrogen Atoms1

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