5-Chloro-2-(p-tolyl)quinazolin-4(1H)-one CAS 83800-91-3
| CAS No. | 83800-91-3 |
| Molecular Formula | C15H11ClN2O |
| Molecular Weight | 270.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-2-(p-tolyl)quinazolin-4(1H)-one (CAS 83800-91-3), molecular formula C15H11ClN2O and molecular weight 270.71 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H11ClN2O, 5-Chloro-2-(p-tolyl)quinazolin-4(1H)-one contains a nitrogen-containing heterocyclic scaffold, 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 270.71 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.
As a certified reference material (CRM), 5-Chloro-2-(p-tolyl)quinazolin-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 | C15H11ClN2O |
| Molecular Weight | 270.71 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.) | 1980 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 5-Chloro-1,2-diphenyl-1H-pyrazol-3(2H)-one (CAS 37585-37-8)
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- 5-Benzyl-3-(4-chlorophenyl)-1,2,4-oxadiazole (CAS 21614-49-3)
- 5-Chloro-2-nitro-N-(pentan-3-yl)benzamide (CAS 923182-90-5)
- N5,N5'-Dihexyl-1H,1'H-[2,2'-bipyrrole]-5,5'-bis(carbothioamide) (CAS 653575-26-9)
- 1-Benzyl-N-[(pyridin-4-yl)methyl]piperidin-4-amine dihydrochloride (CAS 1158306-90-1)
- Methyl 2-(3-chlorophenyl)-4-(4-chlorophenyl)-4-oxobutanoate (CAS 344280-28-0)
- 3,9-Dibenzyl-3,7,9-triazabicyclo[3.3.1]nonane dihydrochloride (CAS 1630907-28-6)
- S-Allyl-L-cysteine (CAS 21593-77-1)
- (Propan-2-yl)[(2,4,5-trimethoxyphenyl)methyl]amine hydrochloride (CAS 1158632-50-8)
- Ethyl 4-bromo-3-methoxybenzoate (CAS 933585-42-3)
- (E)-3-(p-tolyl)prop-2-en-1-ol (CAS 1504-62-7)
- 1-(2,3,5,6-Tetramethylphenyl)ethanone (CAS 2142-79-2)
- D-[His]1-Semaglutide X TFA salt (CAS CATO-CPTD788634)
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