Loxoprofen Impurity 138 CAS CATO-C4X-1488138

Purity ≥95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-1488138
Molecular FormulaC18H24O5
Molecular Weight320.38 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Loxoprofen Impurity 138 CAS CATO-C4X-1488138 chemical structure

Description

Loxoprofen Impurity 138 (C18H24O5) contains a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Loxoprofen Impurity 138 (CAS CATO-C4X-1488138) is a certified pharmaceutical impurity reference standard with the molecular formula C18H24O5 and a molecular weight of 320.38 g/mol.

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.

CATO manufactures Loxoprofen Impurity 138 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC18H24O5
Molecular Weight320.38 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity≥95%
StorageStore at 2-8°C, 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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