6-Chloro-2-(naphthalen-1-yl)-2,3-dihydroquinazolin-4(1H)-one CAS 34934-08-2
| CAS No. | 34934-08-2 |
| Molecular Formula | C18H13ClN2O |
| Molecular Weight | 308.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
6-Chloro-2-(naphthalen-1-yl)-2,3-dihydroquinazolin-4(1H)-one (CAS 34934-08-2), molecular formula C18H13ClN2O and molecular weight 308.76 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H13ClN2O, 6-Chloro-2-(naphthalen-1-yl)-2,3-dihydroquinazolin-4(1H)-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 308.76 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H13ClN2O |
| Molecular Weight | 308.76 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 5-[(Z)-2-(2-Chlorophenyl)diazen-1-yl]-2-methyl-4-phenylpyrimidine (CAS 339279-59-3)
- Ethyl 4-(3-chlorophenyl)-1,6-dimethyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 512840-35-6)
- 2,4,6-Trimethyl-2,4,6-trivinyl-1,3,5,2,4,6-trioxatrisilinane (CAS 3901-77-7)
- (S)-2-(4-Methylcyclohexylidene)acetonitrile (CAS 102633-45-4)
- benzothiophene-4-boronic acid pinacol ester (CAS 1000160-75-7)
- Ethyl 2-(2-(4-(furan-2-carbonyl)piperazin-1-yl)acetamido)-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate (CAS 835598-94-2)
- Betacarotene impurity 7 (CAS CATO-C4X-28157)
- N-[5-(3-Methylphenyl)-1,3,4-thiadiazol-2-yl]-2-oxo-2H-chromene-3-carboxamide (CAS 476459-92-4)
- 2-((4-Hydroxypiperidin-1-yl)methyl)isoindoline-1,3-dione (CAS 923125-60-4)
- 3,4-Diaminobenzimidamide hydrochloride (CAS 66717-58-6)
- 2-(2-Chloropyridin-3-yl)-5,6-dimethyl-1-[(4-nitrophenyl)methyl]-1H-1,3-benzodiazole (CAS 866051-55-0)
- Semaglutide impurity 88 (CAS CATO-C4X-222688)
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