5,8-Dihydroquinazolin-4(1H)-one CAS 99966-39-9

Purity 97%+In StockPharmaceutical Standards
CAS No.99966-39-9
Molecular FormulaC8H8N2O
Molecular Weight148.16 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5,8-Dihydroquinazolin-4(1H)-one CAS 99966-39-9 chemical structure

Description

5,8-Dihydroquinazolin-4(1H)-one (CAS 99966-39-9), molecular formula C8H8N2O and molecular weight 148.16 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 5,8-Dihydroquinazolin-4(1H)-one (C8H8N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 148.16 g/mol, it falls into the low-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).

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 FormulaC8H8N2O
Molecular Weight148.16 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1985
Nitrogen Atoms2

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Why CATO?