Menaquinone impurity 28 CAS CATO-C4X-207628

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-207628
Molecular FormulaC31H40O2
Molecular Weight444.65 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Menaquinone impurity 28 CAS CATO-C4X-207628 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.

Menaquinone impurity 28 (CAS CATO-C4X-207628) is a certified pharmaceutical impurity reference standard with the molecular formula C31H40O2 and a molecular weight of 444.65 g/mol.

Based on its molecular formula C31H40O2, Menaquinone impurity 28 contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 444.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

Physical & Chemical Properties

Molecular FormulaC31H40O2
Molecular Weight444.65 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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