Sodium Cromoglicate Impurity 7 CAS CATO-C4X-20117

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-20117
Molecular FormulaC19H16O9
Molecular Weight388.32 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Sodium Cromoglicate Impurity 7 CAS CATO-C4X-20117 chemical structure

Description

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.

CATO supplies Sodium Cromoglicate Impurity 7 (CAS CATO-C4X-20117), a pharmacopoeial impurity reference standard (molecular formula C19H16O9, MW 388.32 g/mol) used for the identification and quantification of trace impurities in APIs.

Sodium Cromoglicate Impurity 7 (C19H16O9) 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).

CATO manufactures Sodium Cromoglicate Impurity 7 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 FormulaC19H16O9
Molecular Weight388.32 g/mol
AppearancePale yellow to yellow crystalline powder
Purity>90%
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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