Obeticholic Acid Impurity 21 CAS 863239-61-6

Purity >80%In StockPharmacopoeial Impurity Standards
CAS No.863239-61-6
Molecular FormulaC28H49NO6S
Molecular Weight527.76 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Obeticholic Acid Impurity 21 CAS 863239-61-6 chemical structure

Description

The occurrence of Obeticholic Acid Impurity 21 is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Obeticholic Acid Impurity 21 (CAS 863239-61-6) is a certified pharmaceutical impurity reference standard with the molecular formula C28H49NO6S and a molecular weight of 527.76 g/mol.

The molecular framework of Obeticholic Acid Impurity 21 (C28H49NO6S) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 Obeticholic Acid Impurity 21 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 FormulaC28H49NO6S
Molecular Weight527.76 g/mol
Purity>80%
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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Nitrogen Atoms1
Sulfur Atoms1

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