2-(3,5-Dimethyl-1-phenyl-1H-pyrazol-4-yl)-2,3-dihydro-3-hydroxy-4(1H)-quinazolinone CAS 512809-75-5

Purity 97%+In StockPharmaceutical Standards
CAS No.512809-75-5
Molecular FormulaC19H18N4O2
Molecular Weight334.37 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-(3,5-Dimethyl-1-phenyl-1H-pyrazol-4-yl)-2,3-dihydro-3-hydroxy-4(1H)-quinazolinone CAS 512809-75-5 chemical structure

Description

2-(3,5-Dimethyl-1-phenyl-1H-pyrazol-4-yl)-2,3-dihydro-3-hydroxy-4(1H)-quinazolinone (CAS 512809-75-5) is a high-purity analytical reference standard with the molecular formula C19H18N4O2 and a molecular weight of 334.37 g/mol.

Based on its molecular formula C19H18N4O2, 2-(3,5-Dimethyl-1-phenyl-1H-pyrazol-4-yl)-2,3-dihydro-3-hydroxy-4(1H)-quinazolinone contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 334.37 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).

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

As a certified reference material (CRM), 2-(3,5-Dimethyl-1-phenyl-1H-pyrazol-4-yl)-2,3-dihydro-3-hydroxy-4(1H)-quinazolinone meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC19H18N4O2
Molecular Weight334.37 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)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1984
Nitrogen Atoms4

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