Ropivacaine EP Impurity B CAS 27262-40-4

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.27262-40-4
Molecular FormulaC14H20N2O
Molecular Weight232.32 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ropivacaine EP Impurity B CAS 27262-40-4 chemical structure

Description

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.

Ropivacaine EP Impurity B (CAS 27262-40-4) is a certified pharmaceutical impurity reference standard with the molecular formula C14H20N2O and a molecular weight of 232.32 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Ropivacaine EP Impurity B is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 232.32 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).

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 FormulaC14H20N2O
Molecular Weight232.32 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1964
Nitrogen Atoms2

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