Paliperidone Impurity 28 CAS 55665-95-7

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.55665-95-7
Molecular FormulaCH5NO3S
Molecular Weight111.12 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Paliperidone Impurity 28 CAS 55665-95-7 chemical structure

Description

The molecular framework of Paliperidone Impurity 28 (CH5NO3S) is characterized by a sulfone group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

Paliperidone Impurity 28 (CAS 55665-95-7) is a certified pharmaceutical impurity reference standard with the molecular formula CH5NO3S and a molecular weight of 111.12 g/mol.

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 FormulaCH5NO3S
Molecular Weight111.12 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)0.0
CAS Registry Year (est.)1972
Nitrogen Atoms1
Sulfur Atoms1

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