Levocarnitine Impurity 13 CAS 127913-44-4

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.127913-44-4
Molecular FormulaC4H6ClNO
Molecular Weight119.55 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Levocarnitine Impurity 13 CAS 127913-44-4 chemical structure

Description

The molecular framework of Levocarnitine Impurity 13 (C4H6ClNO) is characterized by an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

Levocarnitine Impurity 13 (CAS 127913-44-4) is a certified pharmaceutical impurity reference standard with the molecular formula C4H6ClNO and a molecular weight of 119.55 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 FormulaC4H6ClNO
Molecular Weight119.55 g/mol
Purity>90%
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1993
Halogen ContentCl-containing
Nitrogen Atoms1

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