Chlorhexidine Impurity 20 CAS 97904-31-9

Purity 95%In StockPharmacopoeial Impurity Standards
CAS No.97904-31-9
Molecular FormulaC3N4
Molecular Weight92.06 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Chlorhexidine Impurity 20 CAS 97904-31-9 chemical structure

Description

CATO supplies Chlorhexidine Impurity 20 (CAS 97904-31-9), a pharmacopoeial impurity reference standard (molecular formula C3N4, MW 92.06 g/mol) used for the identification and quantification of trace impurities in APIs.

Chlorhexidine Impurity 20 (C3N4) contains a nitrile group. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC3N4
Molecular Weight92.06 g/mol
Purity95%
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
CAS Registry Year (est.)1984
Nitrogen Atoms4

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