3-(4-Methoxyphenyl)-2-(p-tolyl)-2,3-dihydroquinazolin-4(1H)-one CAS 73302-11-1
| CAS No. | 73302-11-1 |
| Molecular Formula | C22H22N2O2 |
| Molecular Weight | 346.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-(4-Methoxyphenyl)-2-(p-tolyl)-2,3-dihydroquinazolin-4(1H)-one (CAS 73302-11-1), molecular formula C22H22N2O2 and molecular weight 346.42 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C22H22N2O2, 3-(4-Methoxyphenyl)-2-(p-tolyl)-2,3-dihydroquinazolin-4(1H)-one 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 346.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 3-(4-Methoxyphenyl)-2-(p-tolyl)-2,3-dihydroquinazolin-4(1H)-one 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 Formula | C22H22N2O2 |
| Molecular Weight | 346.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
Related Methoxyphenyl Standards
- 1-(4-Methoxyphenyl)-4-(m-tolylsulfonyl)piperazine (CAS 667912-02-9)
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Recommended Standards
- 2-Ethylbutyl 4-(4-methoxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 300360-01-4)
- 4-Hydroxy-1-methyl-N-phenyl-1H-benzo[c][1,2]thiazine-3-carbothioamide 2,2-dioxide (CAS 320423-88-9)
- 2-Benzyl 3-ethyl (R)-2,8-diazaspiro[4.5]decane-2,3-dicarboxylate (CAS 2306255-08-1)
- 4-Methyl-5-(2-{[2-(morpholin-4-yl)ethyl]amino}acetyl)-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-2-one (CAS 866156-79-8)
- 2-(Naphthalen-2-yloxy)acetohydrazide (CAS 36304-47-9)
- N-(3-Cyclopropoxy-4-(methylthio)phenyl)methanesulfonamide (CAS 1243362-25-5)
- 2-Benzylpyridine 1-oxide (CAS 20531-86-6)
- Ethyl 4-(2,5-dimethyl-1h-pyrrol-1-yl)benzoate (CAS 5159-70-6)
- 6-Hydrazinyl-5-nitropyrimidin-4-amine (CAS 3137-54-0)
- 7-(Bromomethyl)-4-methyl-2H-chromen-2-one (CAS 53878-05-0)
- 2,4-Dichlorophenyl ethyl carbonate (CAS 22876-28-4)
- Cefuroxime Impurity 62 (CAS CATO-C4X-124562)
- 2-(6-Methyl-2-phenylimidazo[1,2-a]pyridin-3-yl)ethan-1-amine (CAS 885272-82-2)
- Liraglutide Impurity 15 TFA Salt (CAS CATO-C4X-199215)
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