Indacaterol Impurity 14 CAS 173140-90-4

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.173140-90-4
Molecular FormulaC18H15NO3
Molecular Weight293.32 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Indacaterol Impurity 14 CAS 173140-90-4 chemical structure

Description

The occurrence of Indacaterol Impurity 14 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Indacaterol Impurity 14 (CAS 173140-90-4) is a certified pharmaceutical impurity reference standard with the molecular formula C18H15NO3 and a molecular weight of 293.32 g/mol.

Indacaterol Impurity 14 (C18H15NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC18H15NO3
Molecular Weight293.32 g/mol
AppearancePale yellow to yellow crystalline powder
Purity>90%
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2006
Nitrogen Atoms1

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