3-(5-Chlorobenzo[d]thiazol-2-yl)-2-phenylquinazolin-4(3H)-one CAS 82450-43-9
| CAS No. | 82450-43-9 |
| Molecular Formula | C21H12ClN3OS |
| Molecular Weight | 389.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-(5-Chlorobenzo[d]thiazol-2-yl)-2-phenylquinazolin-4(3H)-one (CAS 82450-43-9) is a high-purity analytical reference standard with the molecular formula C21H12ClN3OS and a molecular weight of 389.86 g/mol.
Structurally, 3-(5-Chlorobenzo[d]thiazol-2-yl)-2-phenylquinazolin-4(3H)-one (C21H12ClN3OS) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 17.0, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 389.86 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C21H12ClN3OS |
| Molecular Weight | 389.86 g/mol |
| 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chlorobenzo Standards
- 3-(6-Chlorobenzo[d]thiazol-2-yl)-2-phenylquinazolin-4(3H)-one (CAS 82450-44-0)
- N-(4-(5-Chlorobenzo[d]oxazol-2-yl)phenyl)-3-nitrobenzamide (CAS 331668-02-1)
- 3-(5-Chlorobenzo[d]oxazol-2-yl)-7-(diethylamino)-2-oxo-2H-chromene-4-carbonitrile (CAS 70546-12-2)
- 10-Chlorobenzo[e]benzo[4,5]imidazo[1,2-c][1,2,3]triazine (CAS 10211-11-7)
- 3-(5-Chlorobenzo[d]oxazol-2-yl)-N-(3-(trifluoromethyl)benzyl)pyridin-2-amine (CAS 339102-07-7)
- (3-Chlorobenzo[b]thiophen-2-yl)(4-(4-fluorophenyl)piperazin-1-yl)methanone (CAS 351329-77-6)
- 2-(2-(3-Chlorobenzo[b]thiophene-2-carbonyl)hydrazine-1-carbonyl)benzoic acid (CAS 315249-05-9)
- N-(3-(6-Chlorobenzo[d]oxazol-2-yl)-5-methylphenyl)-4-ethoxybenzamide (CAS 590396-53-5)
Recommended Standards
- 2-((4-Amino-5-(4-chlorophenyl)-4H-1,2,4-triazol-3-yl)thio)-N-(4-methoxyphenyl)acetamide (CAS 565160-80-7)
- 2-((4-Amino-5-(3-chlorophenyl)-4H-1,2,4-triazol-3-yl)thio)-N-(4-methoxyphenyl)acetamide (CAS 577981-05-6)
- Ethyl 2-((2-((4-chlorophenyl)amino)-2-oxoethyl)thio)-1H-benzo[d]imidazole-1-carboxylate (CAS 41215-90-1)
- 1,2-Dibromo-1,2,3,3,3-pentafluoro-1-(2,2,2-trifluoroethoxy)propane (CAS 396716-52-2)
- 2-(4-tert-butoxycarbonyl-1,4-oxazepan-6-yl)acetic acid (CAS 2418669-31-3)
- 3-(3-Nitrophenyl)imidazo[1,5-a]pyridine-1-carbaldehyde (CAS 446830-51-9)
- 2-(2-Bromo-4-(difluoromethyl)pyridin-3-yl)acetonitrile (CAS 1805295-82-2)
- N-methyl-4,5-dihydro-1,3-oxazol-2-amine (CAS 2214-70-2)
- 3-(2-Chlorophenyl)-3-hydroxypropanenitrile (CAS 84466-39-7)
- 2-(2-Methyl-5-nitrophenyl)acetic acid (CAS 287119-83-9)
- Dehydroabietic Acid 2-Aminoethanol Salt (CAS 642989-65-9)
- 2,4-Dichloro-7-methoxyquinazolin-6-ol (CAS 866823-27-0)
- (3S,4S)-4-methoxyoxolan-3-amine (CAS 1820583-32-1)
- Des-[Gly]31-Semaglutide(x TFA Salt) (CAS 873874-39-6(free base))
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