Piperazine Impurity 45 CAS 42951-91-7

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.42951-91-7
Molecular FormulaC7H13ClN2O
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Piperazine Impurity 45 CAS 42951-91-7 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.

CATO supplies Piperazine Impurity 45 (CAS 42951-91-7), a pharmacopoeial impurity reference standard (molecular formula C7H13ClN2OHCl, MW 213.10 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Piperazine Impurity 45 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 213.10 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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 FormulaC7H13ClN2O HCl
Molecular Weight213.10 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1969
Halogen ContentCl-containing
Nitrogen Atoms2

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