Landiolol Impurity 81 CAS CATO-C4X-262181

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-262181
Molecular FormulaC33H44O11
Molecular Weight616.70 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Landiolol Impurity 81 CAS CATO-C4X-262181 chemical structure

Description

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.

Landiolol Impurity 81 (CAS CATO-C4X-262181) is a certified pharmaceutical impurity reference standard with the molecular formula C33H44O11 and a molecular weight of 616.70 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Landiolol Impurity 81 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 616.70 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

Physical & Chemical Properties

Molecular FormulaC33H44O11
Molecular Weight616.70 g/mol
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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