3-[4-(Propan-2-yl)benzenesulfonyl]-4H,5H-[1,2,3]triazolo[1,5-a]quinazolin-5-one CAS 866350-26-7
| CAS No. | 866350-26-7 |
| Molecular Formula | C18H16N4O3S |
| Molecular Weight | 368.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-[4-(Propan-2-yl)benzenesulfonyl]-4H,5H-[1,2,3]triazolo[1,5-a]quinazolin-5-one (CAS 866350-26-7), molecular formula C18H16N4O3S and molecular weight 368.41 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-[4-(Propan-2-yl)benzenesulfonyl]-4H,5H-[1,2,3]triazolo[1,5-a]quinazolin-5-one (C18H16N4O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 368.41 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 3-[4-(Propan-2-yl)benzenesulfonyl]-4H,5H-[1,2,3]triazolo[1,5-a]quinazolin-5-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 | C18H16N4O3S |
| Molecular Weight | 368.41 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Propan Standards
- 4-Oxo-4-{4-[4-(propan-2-yl)benzenesulfonyl]piperazin-1-yl}butanoic acid (CAS 888103-39-7)
- 1-[Tris(propan-2-yl)silyl]-1H-indole-6-sulfonyl chloride (CAS 912846-33-4)
- Propan-2-yl 2-amino-4-(3,4-difluorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate (CAS 445382-14-9)
- Propan-2-yl 4-{[3-cyano-6-methyl-4-(trifluoromethyl)pyridin-2-yl]sulfanyl}-3-oxobutanoate (CAS 674807-21-7)
- 1-(6-{[4-(propan-2-yl)phenyl]sulfanyl}pyridazin-3-yl)piperidine-4-carboxylic acid (CAS 1113110-31-8)
- 1-(6-{[4-(propan-2-yl)phenyl]sulfanyl}pyridazin-3-yl)piperidine-3-carboxylic acid (CAS 1793835-82-1)
- 4-Phenyl-1-(4-{[3-(propan-2-yl)-1,2,4-oxadiazol-5-yl]methyl}piperidin-1-yl)butan-1-one (CAS 1775471-53-8)
- 3-Methyl-1-{4-[4-(propan-2-yl)benzenesulfonyl]phenyl}-1H-pyrazol-5-amine (CAS 882232-00-0)
Recommended Standards
- 2,2-Dimethyl-5-{[6-(4-methylphenyl)imidazo[2,1-b][1,3]thiazol-5-yl]methylidene}-1,3-dioxane-4,6-dione (CAS 439107-31-0)
- 3-Benzoyl-5-(2,4-dimethoxybenzylidene)-2-thioxoimidazolidin-4-one (CAS 568555-54-4)
- 2-(3,4,5-Trimethoxybenzylidene)benzo[4,5]imidazo[2,1-b]thiazol-3(2H)-one (CAS 311327-86-3)
- 4-((N-(pyridin-2-yl)phenylsulfonamido)methyl)benzoic acid (CAS 296772-87-7)
- 5-Fluoro-4-hydroxyquinoline PB-22 (CAS 1797132-65-0)
- 1-(3-Chloropropyl)piperidin-4-ol (CAS 145285-36-5)
- cis-3-(3,4-Dimethylbenzoyl)cyclopentane-1-carboxylic acid (CAS 732253-20-2)
- Ethyl 3-oxo-3-(pyridin-2-ylamino)propanoate (CAS 138305-21-2)
- 2-(2-Oxopyrrolidin-1-yl)cyclohexane-1-carboxylic acid (CAS 1344240-00-1)
- 1-Cyclopropylpropane-1,2-dione (CAS 15940-89-3)
- 1-Chloro-3-ethynyl-2-(trifluoromethyl)benzene (CAS 1851097-56-7)
- N,N'-(5,10,15,17-Tetraoxo-10,15,16,17-tetrahydro-5H-dinaphtho[2,3-a:2',3'-i]carbazole-4,9-diyl)dibenzamide (CAS 131-92-0)
- 4-Bromo-5-(sec-butoxymethyl)-1-(difluoromethyl)-1H-pyrazole (CAS 1856099-38-1)
- Peptide Impurity 82 (CAS 10491-78-8)
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