Loteprednol Impurity 15 CAS CATO-C4X-195715

Purity ≥95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-195715
Molecular FormulaC26H34O9
Molecular Weight490.54 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Loteprednol Impurity 15 CAS CATO-C4X-195715 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 Loteprednol Impurity 15.

CATO supplies Loteprednol Impurity 15 (CAS CATO-C4X-195715), a pharmacopoeial impurity reference standard (molecular formula C26H34O9, MW 490.54 g/mol) used for the identification and quantification of trace impurities in APIs.

Based on its molecular formula C26H34O9, Loteprednol Impurity 15 contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 490.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 FormulaC26H34O9
Molecular Weight490.54 g/mol
AppearancePale yellow to yellow crystalline powder
Purity≥95%
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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