Methylprednisolone Acetate EP Impurity G CAS 1625-11-2

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.1625-11-2
Molecular FormulaC24H34O6
Molecular Weight418.52 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Methylprednisolone Acetate EP Impurity G CAS 1625-11-2 chemical structure

Description

The occurrence of Methylprednisolone Acetate EP Impurity G is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Methylprednisolone Acetate EP Impurity G (CAS 1625-11-2), a pharmacopoeial impurity reference standard (molecular formula C24H34O6, MW 418.52 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Methylprednisolone Acetate EP Impurity G (C24H34O6) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 418.52 g/mol, it falls into the moderately-high-molecular-weight range. 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 Methylprednisolone Acetate EP Impurity G 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 FormulaC24H34O6
Molecular Weight418.52 g/mol
AppearancePale yellow to 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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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