Urapidil Impurity 31 CAS 40226-15-1

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.40226-15-1
Molecular FormulaC6H16N2O
Molecular Weight132.20 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Urapidil Impurity 31 CAS 40226-15-1 chemical structure

Description

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

Urapidil Impurity 31 (CAS 40226-15-1) is a certified pharmaceutical impurity reference standard with the molecular formula C6H16N2O and a molecular weight of 132.20 g/mol.

Structurally, Urapidil Impurity 31 (C6H16N2O) contains an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 0.0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 132.20 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC6H16N2O
Molecular Weight132.20 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)0.0
CAS Registry Year (est.)1968
Nitrogen Atoms2

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