Brimonidine EP Impurity A CAS 91147-43-2

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.91147-43-2
Molecular FormulaC11H11N5
Molecular Weight213.24 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Brimonidine EP Impurity A CAS 91147-43-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 213.24 g/mol gives Brimonidine EP Impurity A distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Brimonidine EP Impurity A (CAS 91147-43-2) is a certified pharmaceutical impurity reference standard with the molecular formula C11H11N5 and a molecular weight of 213.24 g/mol.

Brimonidine EP Impurity A (C11H11N5) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. Its physicochemical properties are representative of its class; 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.

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 FormulaC11H11N5
Molecular Weight213.24 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)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1983
Nitrogen Atoms5

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