Betamethasone Valerate EP Impurity E (Betamethasone 21-Valerate) CAS 2240-28-0

Description

Compared with other compounds in its class, the molecular weight of 476.58 g/mol gives Betamethasone Valerate EP Impurity E (Betamethasone 21-Valerate) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Betamethasone Valerate EP Impurity E (Betamethasone 21-Valerate) (CAS 2240-28-0), a pharmacopoeial impurity reference standard (molecular formula C27H37FO6, MW 476.58 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a steroid core, a hydroxyl group, an ether linkage, fluorine substitution, Betamethasone Valerate EP Impurity E (Betamethasone 21-Valerate) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 476.58 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).

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.

As a certified reference material (CRM), Betamethasone Valerate EP Impurity E (Betamethasone 21-Valerate) meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com