2,5-Diacetyl-[1,2,4]triazolo[4,3-a]quinoxaline-1,4(2H,5H)-dione CAS 90042-39-0
| CAS No. | 90042-39-0 |
| Molecular Formula | C13H10N4O4 |
| Molecular Weight | 286.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2,5-Diacetyl-[1,2,4]triazolo[4,3-a]quinoxaline-1,4(2H,5H)-dione (CAS 90042-39-0), molecular formula C13H10N4O4 and molecular weight 286.24 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,5-Diacetyl-[1,2,4]triazolo[4,3-a]quinoxaline-1,4(2H,5H)-dione (C13H10N4O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 286.24 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C13H10N4O4 |
| Molecular Weight | 286.24 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 4 |
Related Diacetyl Standards
- 2,2-Diacetyl-3-(4-chlorophenyl)cyclopropane-1,1-dicarbonitrile (CAS 477890-19-0)
- 3-(2,6-Diacetyl-1,5-dimethyl-3H-pyrrolizin-7-yl)propanoic acid (CAS 153288-96-1)
- 3,6-Diacetyl-9-ethylcarbazole (CAS 1483-97-2)
- N-(1,2-Diacetyl-3-oxo-2,3-dihydro-1H-indazol-6-yl)acetamide (CAS 61346-25-6)
- 2,2-Diacetyl-3-(2-nitrophenyl)cyclopropane-1,1-dicarbonitrile (CAS 478041-13-3)
- 2,2-Diacetyl-3-(4-nitrophenyl)cyclopropane-1,1-dicarbonitrile (CAS 478041-12-2)
- 2,2-Diacetyl-3-(4-fluorophenyl)cyclopropane-1,1-dicarbonitrile (CAS 477890-35-0)
- Diacetyl 2,4-Dinitrophenylhydrazone (CAS 2256-00-0)
Recommended Standards
- 2,4-Dichloro-N-(non-1-en-4-yl)aniline (CAS 905909-01-5)
- 2-Benzamido-4-nitrobenzoic acid (CAS 4993-89-9)
- 2,2,3,3-Tetrafluoropropyl 4-methylbenzenesulfonate (CAS 786-31-2)
- 3,3',5'-Tricarboxylic biphenyl (CAS 863495-62-9)
- 1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-hydroxyethanone (CAS 583860-52-0)
- 2-(Aminomethyl)-6-cyano-3-(difluoromethyl)pyridine-5-carboxylic acid (CAS 1805425-70-0)
- 2-(2,2,2-Trifluoroethyl)-2,8-diazaspiro[4.5]Decan-3-one hydrochloride (CAS 1385696-50-3)
- tert-butyl N-(3-amino-2-phenylpropyl)carbamate (CAS 437708-57-1)
- (R)-2-(3-(Benzyl(methyl)amino)pyrrolidin-1-yl)ethanol (CAS 1353997-85-9)
- 4-(2-Bromoethyl)thiomorpholine 1,1-dioxide (CAS 1249965-45-4)
- 1-Methyl-1H-benzo[d]imidazol-5-yl butane-1-sulfonate (CAS 1396802-38-2)
- 4-Bromo-2-methyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazole (CAS 1262152-90-8)
- 2,4,6-Tribromophenyl allyl ether (CAS 3278-89-5)
- Semaglutide Impurity 139 (CAS CATO-C4X-2226139)
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