Ensifentrine Impurity 28 CAS 1266868-06-7

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.1266868-06-7
Molecular FormulaC11H21NO
Molecular Weight183.29 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ensifentrine Impurity 28 CAS 1266868-06-7 chemical structure

Description

Ensifentrine Impurity 28 (CAS 1266868-06-7) is a certified pharmaceutical impurity reference standard with the molecular formula C11H21NO and a molecular weight of 183.29 g/mol.

Based on its molecular formula C11H21NO, Ensifentrine Impurity 28 contains an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 183.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

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 FormulaC11H21NO
Molecular Weight183.29 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1990
Nitrogen Atoms1

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