2-(((3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-isopropylquinazolin-4(3H)-one CAS 919958-83-1
| CAS No. | 919958-83-1 |
| Molecular Formula | C20H17ClN4O2S |
| Molecular Weight | 412.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-(((3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-isopropylquinazolin-4(3H)-one is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-(((3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-isopropylquinazolin-4(3H)-one (CAS 919958-83-1) is a high-purity analytical reference standard with the molecular formula C20H17ClN4O2S and a molecular weight of 412.89 g/mol.
Based on its molecular formula C20H17ClN4O2S, 2-(((3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-isopropylquinazolin-4(3H)-one contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 412.89 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 2-(((3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-isopropylquinazolin-4(3H)-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 | C20H17ClN4O2S |
| Molecular Weight | 412.89 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Chlorophenyl Standards
- 4-[(4-Chlorophenyl)sulfanyl]-N-(2,3-dimethylphenyl)-3-nitrobenzamide (CAS 303988-22-9)
- 2-(4-Chlorophenyl)-10-phenyl-1,2,4,9,10,12-hexaazadispiro[4.2.4(8).2(5)]Tetradecane-3,11-dione (CAS 338956-28-8)
- 7-(2-(4-(3-Chlorophenyl)piperazin-1-yl)-2-oxoethoxy)-4-methyl-2H-chromen-2-one (CAS 742116-89-8)
- 4-((4-Chlorophenyl)sulfonyl)-N-(3-methoxypropyl)-2-(thiophen-2-yl)oxazol-5-amine (CAS 627834-73-5)
- 2-{[(4-chlorophenyl)methyl]sulfanyl}-1-[4-(trifluoromethyl)benzoyl]-1,4,5,6-tetrahydropyrimidine (CAS 866153-37-9)
- 4-((2-(4-Chlorophenyl)-2-Ethylbutoxy)Methyl)-1-Fluoro-2-Phenoxy-Benzene (CAS 83493-19-0)
- (E)-{[6-(4-chlorophenyl)imidazo[2,1-b][1,3]thiazol-5-yl]methylidene}[(4-nitrophenyl)methoxy]amine (CAS 338404-56-1)
- (2Z)-3-(2-{[(4-chlorophenyl)methyl]sulfanyl}quinolin-3-yl)-2-phenylprop-2-enenitrile (CAS 478065-17-7)
Recommended Standards
- Halcinonide Impurity N2 (CAS 982-91-2)
- 2,2-Dibromo-1-(5-(2,4-dichlorophenyl)furan-2-yl)ethan-1-one (CAS 338756-44-8)
- Flumetasone Impurity 19 (CAS CATO-C4X-191019)
- 4-[(1E)-3-(4-Methylphenyl)-3-oxoprop-1-en-1-yl]phenyl 4-chlorobenzene-1-sulfonate (CAS 331460-92-5)
- (2-(4-Methyl-1H-pyrazol-1-yl)pyrimidin-5-yl)boronic acid (CAS 2225172-21-2)
- (2R,4R)-4-Hydroxy-1-(2,2,2-trifluoroacetyl)pyrrolidine-2-carboxylic acid (CAS 1492048-26-6)
- Butyl 2-(butylthio)-5-methyl-1,3-selenazole-4-carboxylate (CAS 647032-85-7)
- 2-(Chloromethyl)cyclohexanol (CAS 113662-55-8)
- 1-(piperazin-2-yl)propan-2-amine (CAS 1146290-16-5)
- 1-(2-Amino-5,6,7,8-tetrahydroquinazolin-4-yl)-3-phenylurea (CAS 326908-89-8)
- Methyl 6-nitro-1H-indole-4-carboxylate (CAS 1082040-42-3)
- Methyl 3-(2-chloroacetamido)-3-(3-fluorophenyl)propanoate (CAS 866144-58-3)
- 2-methyl-4,5,6,7-tetrahydro-1,3-benzothiazol-7-one (CAS 17583-14-1)
- Semaglutide Impurity 140 (CAS CATO-C4X-2226140)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com