Tamoxifen Impurity 22 CAS CATO-C4X-123322

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-123322
Molecular FormulaC18H20
Molecular Weight236.35 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Tamoxifen Impurity 22 CAS CATO-C4X-123322 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.

Tamoxifen Impurity 22 (CAS CATO-C4X-123322) is a certified pharmaceutical impurity reference standard with the molecular formula C18H20 and a molecular weight of 236.35 g/mol.

Owing to a polycyclic aromatic system, Tamoxifen Impurity 22 is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 236.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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 FormulaC18H20
Molecular Weight236.35 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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