Eltrombopag Impurity 31 CAS 25487-66-5

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.25487-66-5
Molecular FormulaC7H7BO4
Molecular Weight165.94 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Eltrombopag Impurity 31 CAS 25487-66-5 chemical structure

Description

As a certified reference material (CRM), Eltrombopag Impurity 31 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.

Eltrombopag Impurity 31 (CAS 25487-66-5) is a certified pharmaceutical impurity reference standard with the molecular formula C7H7BO4 and a molecular weight of 165.94 g/mol.

Eltrombopag Impurity 31 (C7H7BO4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

Physical & Chemical Properties

Molecular FormulaC7H7BO4
Molecular Weight165.94 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity>95%
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)4.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1964

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