1,3,2-Dioxaplumbolan-2-ylidene, 4,5-dioxo- CAS 69657-50-7

Purity 97%+In StockPharmaceutical Standards
CAS No.69657-50-7
Molecular FormulaC2O4Pb
Molecular Weight295.22 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1,3,2-Dioxaplumbolan-2-ylidene, 4,5-dioxo- CAS 69657-50-7 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1,3,2-Dioxaplumbolan-2-ylidene, 4,5-dioxo-.

1,3,2-Dioxaplumbolan-2-ylidene, 4,5-dioxo- (CAS 69657-50-7) is a high-purity analytical reference standard with the molecular formula C2O4Pb and a molecular weight of 295.22 g/mol.

1,3,2-Dioxaplumbolan-2-ylidene, 4,5-dioxo- (C2O4Pb) contains a carboxylic acid group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

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 FormulaC2O4Pb
Molecular Weight295.22 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1976

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