Clethodim Impurity 8 CAS 4643-05-4

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.4643-05-4
Molecular FormulaC3H5ClO
Molecular Weight92.52 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Clethodim Impurity 8 CAS 4643-05-4 chemical structure

Description

CATO supplies Clethodim Impurity 8 (CAS 4643-05-4), a pharmacopoeial impurity reference standard (molecular formula C3H5ClO, MW 92.52 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a hydroxyl group, an ether linkage, chlorine substitution, Clethodim Impurity 8 is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 92.52 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.

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 FormulaC3H5ClO
Molecular Weight92.52 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1958
Halogen ContentCl-containing

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