Aspirin Impurity 27 CAS 25714-71-0

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.25714-71-0
Molecular FormulaC4H8O2
Molecular Weight88.11 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Aspirin Impurity 27 CAS 25714-71-0 chemical structure

Description

Aspirin Impurity 27 (C4H8O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions.

Aspirin Impurity 27 (CAS 25714-71-0) is a certified pharmaceutical impurity reference standard with the molecular formula C4H8O2 and a molecular weight of 88.11 g/mol.

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC4H8O2
Molecular Weight88.11 g/mol
Purity>95%
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1964

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