5-Isopropyl-8-phenyl-[1,3]dioxolo[4,5-g]quinazolin-6(5H)-one CAS 33095-89-5

Purity 97%+In StockPharmaceutical Standards
CAS No.33095-89-5
Molecular FormulaC18H16N2O3
Molecular Weight308.33 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Isopropyl-8-phenyl-[1,3]dioxolo[4,5-g]quinazolin-6(5H)-one CAS 33095-89-5 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 5-Isopropyl-8-phenyl-[1,3]dioxolo[4,5-g]quinazolin-6(5H)-one.

5-Isopropyl-8-phenyl-[1,3]dioxolo[4,5-g]quinazolin-6(5H)-one (CAS 33095-89-5), molecular formula C18H16N2O3 and molecular weight 308.33 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 5-Isopropyl-8-phenyl-[1,3]dioxolo[4,5-g]quinazolin-6(5H)-one (C18H16N2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 308.33 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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 FormulaC18H16N2O3
Molecular Weight308.33 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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1966
Nitrogen Atoms2

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