Promethazine Impurity C18 HCI CAS 17256-39-2

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.17256-39-2
Molecular FormulaC5H12ClN
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Promethazine Impurity C18 HCI CAS 17256-39-2 chemical structure

Description

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.

Promethazine Impurity C18 HCI (CAS 17256-39-2) is a certified pharmaceutical impurity reference standard with the molecular formula C5H12ClNHCl and a molecular weight of 158.07 g/mol.

Owing to chlorine substitution, Promethazine Impurity C18 HCI is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 158.07 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

Physical & Chemical Properties

Molecular FormulaC5H12ClN HCl
Molecular Weight158.07 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)-1.0
CAS Registry Year (est.)1961
Halogen ContentCl-containing
Nitrogen Atoms1

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