Diazepam Impurity 12 CAS CATO-C4X-146512

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-146512
Molecular FormulaC17H16N2O2
Molecular Weight280.32 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Diazepam Impurity 12 CAS CATO-C4X-146512 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 280.32 g/mol gives Diazepam Impurity 12 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Diazepam Impurity 12 (CAS CATO-C4X-146512) is a certified pharmaceutical impurity reference standard with the molecular formula C17H16N2O2 and a molecular weight of 280.32 g/mol.

Structurally, Diazepam Impurity 12 (C17H16N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 280.32 g/mol, it falls into the medium-molecular-weight range. 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).

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 FormulaC17H16N2O2
Molecular Weight280.32 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms2

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