1-(3-(2,3,5,6-Tetramethylphenyl)-9H-benzo[4,5][1,2,3]triazolo[2,1-b][1,2,3,5]oxatriazol-9-yl)ethan-1-one CAS 391218-35-2
| CAS No. | 391218-35-2 |
| Molecular Formula | C19H20N4O2 |
| Molecular Weight | 336.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-(3-(2,3,5,6-Tetramethylphenyl)-9H-benzo[4,5][1,2,3]triazolo[2,1-b][1,2,3,5]oxatriazol-9-yl)ethan-1-one is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-(3-(2,3,5,6-Tetramethylphenyl)-9H-benzo[4,5][1,2,3]triazolo[2,1-b][1,2,3,5]oxatriazol-9-yl)ethan-1-one (CAS 391218-35-2), molecular formula C19H20N4O2 and molecular weight 336.39 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(3-(2,3,5,6-Tetramethylphenyl)-9H-benzo[4,5][1,2,3]triazolo[2,1-b][1,2,3,5]oxatriazol-9-yl)ethan-1-one (C19H20N4O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 336.39 g/mol, it falls into the moderately-high-molecular-weight range. 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.
As a certified reference material (CRM), 1-(3-(2,3,5,6-Tetramethylphenyl)-9H-benzo[4,5][1,2,3]triazolo[2,1-b][1,2,3,5]oxatriazol-9-yl)ethan-1-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 | C19H20N4O2 |
| Molecular Weight | 336.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
Related Tetramethylphenyl Standards
- 2-((2,3,5,6-Tetramethylphenyl)sulfonamido)benzoic acid (CAS 325832-90-4)
- 3-((2,3,5,6-Tetramethylphenyl)sulfonamido)benzoic acid (CAS 838818-53-4)
- 4-((2,3,5,6-Tetramethylphenyl)sulfonamido)benzoic acid (CAS 730249-87-3)
- 3-((N,2,4,6-tetramethylphenyl)sulfonamido)thiophene-2-carboxylic acid (CAS 1325306-81-7)
- 1-((2,3,5,6-Tetramethylphenyl)sulfonamido)cyclohexane-1-carboxylic acid (CAS 885269-54-5)
- 1-((2,3,5,6-Tetramethylphenyl)sulfonyl)piperidine-4-carbohydrazide (CAS 956576-55-9)
- 2-Methyl-1-((2,3,5,6-tetramethylphenyl)sulfonyl)-1H-benzo[d]imidazole (CAS 898647-61-5)
- 4-(((2,3,5,6-Tetramethylphenyl)sulfonamido)methyl)benzoic acid (CAS 690646-18-5)
Recommended Standards
- (S)-ethyl 3-(4-(2,7-naphthyridin-1-ylamino)phenyl)-2-aminopropanoate (CAS 369648-61-3)
- 1-(3,4-Dimethylphenyl)-N-(4-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide (CAS 866872-31-3)
- (2R,3R,4S,5R)-2-(6-Amino-9H-purin-9-yl)-5-((isobutyl(methyl)amino)methyl)tetrahydrofuran-3,4-diol (CAS 71802-67-0)
- 1-(Morpholinomethyl)-1H-indole-2,3-dione 3-(N-phenylhydrazone) (CAS 321970-22-3)
- 1-(Piperidin-3-ylmethyl)-1H-1,2,3-triazole-4-carboxamide hydrochloride (CAS 1713160-63-4)
- 2-Amino-6-bromo-3-fluorophenol (CAS 1805533-15-6)
- (4-(3-Bromopropoxy)phenyl)methanol (CAS 214614-64-9)
- 1-Bromo-3-(perfluoroethyl)benzene (CAS 18739-03-2)
- 2-Amino-N-isopropyl-N-(pyridin-2-ylmethyl)acetamide (CAS 1178299-58-5)
- 5-(Isobutylthio)-1,3,4-thiadiazole-2-thiol (CAS 89601-20-7)
- 4-[5-(Naphthalen-1-yl)-1H-pyrazol-3-yl]piperidine (CAS 103660-49-7)
- 3-(4-Chlorophenyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine (CAS 1449790-89-9)
- Epiisopiloturine (CAS 69460-80-6)
- Semaglutide Impurity 185 (CAS CATO-C4X-2226185)
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