Etrasimod Impurity 55 CAS CATO-C4X-321455

Purity ≥95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-321455
Molecular FormulaC26H26F3NO4
Molecular Weight473.48 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Etrasimod Impurity 55 CAS CATO-C4X-321455 chemical structure

Description

The occurrence of Etrasimod Impurity 55 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Etrasimod Impurity 55 (CAS CATO-C4X-321455) is a certified pharmaceutical impurity reference standard with the molecular formula C26H26F3NO4 and a molecular weight of 473.48 g/mol.

Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Etrasimod Impurity 55 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 473.48 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.

CATO manufactures Etrasimod Impurity 55 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 FormulaC26H26F3NO4
Molecular Weight473.48 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Halogen ContentF-containing
Nitrogen Atoms1

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