Prednisolone Impurity 17 CAS CATO-C4X-173717

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-173717
Molecular FormulaC21H30O11P2
Molecular Weight520.40 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Prednisolone Impurity 17 CAS CATO-C4X-173717 chemical structure

Description

The occurrence of Prednisolone Impurity 17 is closely related to a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Prednisolone Impurity 17 (CAS CATO-C4X-173717) is a certified pharmaceutical impurity reference standard with the molecular formula C21H30O11P2 and a molecular weight of 520.40 g/mol.

Owing to a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage, Prednisolone Impurity 17 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 520.40 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).

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 Prednisolone Impurity 17 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 FormulaC21H30O11P2
Molecular Weight520.40 g/mol
AppearanceOff-white to pale 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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