Epalrestat Impurity 13 CAS 66051-14-7

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.66051-14-7
Molecular FormulaC10H10O
Molecular Weight146.19 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Epalrestat Impurity 13 CAS 66051-14-7 chemical structure

Description

CATO supplies Epalrestat Impurity 13 (CAS 66051-14-7), a pharmacopoeial impurity reference standard (molecular formula C10H10O, MW 146.19 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a hydroxyl group, an ether linkage, an aromatic ring system, Epalrestat Impurity 13 is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 146.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 FormulaC10H10O
Molecular Weight146.19 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1975

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