Ibuprofen Impurity 155 CAS CATO-C4X-1082155

Purity 95In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-1082155
Molecular FormulaC18H28O3
Molecular Weight292.41 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ibuprofen Impurity 155 CAS CATO-C4X-1082155 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ibuprofen Impurity 155.

CATO supplies Ibuprofen Impurity 155 (CAS CATO-C4X-1082155), a pharmacopoeial impurity reference standard (molecular formula C18H28O3, MW 292.41 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Ibuprofen Impurity 155 (C18H28O3) is characterized by a steroid core, a hydroxyl group, an ether linkage. 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.

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 FormulaC18H28O3
Molecular Weight292.41 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity95
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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