5-Chloro-2-phenylquinazolin-4(3H)-one CAS 19407-57-9
| CAS No. | 19407-57-9 |
| Molecular Formula | C14H9ClN2O |
| Molecular Weight | 256.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-2-phenylquinazolin-4(3H)-one (CAS 19407-57-9) is a high-purity analytical reference standard with the molecular formula C14H9ClN2O and a molecular weight of 256.69 g/mol.
5-Chloro-2-phenylquinazolin-4(3H)-one (C14H9ClN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 Formula | C14H9ClN2O |
| Molecular Weight | 256.69 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 6-Chloro-2-phenylquinazolin-4(3H)-one (CAS 1026-12-6)
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Recommended Standards
- 8-Chloro-2-phenylquinazolin-4(3H)-one (CAS 19407-55-7)
- tert-Butyl (2-chloro-5-formylpyridin-4-yl)carbamate (CAS 1956381-87-5)
- 4-[(2-Chloro-6-nitrophenyl)methyl]morpholine (CAS 1881332-26-8)
- 1-(2-Chloro-6-nitrophenyl)-4-piperidinol (CAS 1968605-72-2)
- [3,3'-Bipyridin]-5-ylmethanol (CAS 484673-70-3)
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- Hexapeptide-9 (CAS 885024-94-2)
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