Lornoxicam Impurity 76 CAS 40418-38-0

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.40418-38-0
Molecular FormulaC7H13NO4
Molecular Weight175.18 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Lornoxicam Impurity 76 CAS 40418-38-0 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.

Lornoxicam Impurity 76 (CAS 40418-38-0) is a certified pharmaceutical impurity reference standard with the molecular formula C7H13NO4 and a molecular weight of 175.18 g/mol.

Lornoxicam Impurity 76 (C7H13NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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.

Physical & Chemical Properties

Molecular FormulaC7H13NO4
Molecular Weight175.18 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1968
Nitrogen Atoms1

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