Cyclobuta[b]quinoxaline-1,2(3H,8H)-dione CAS 20420-52-4
| CAS No. | 20420-52-4 |
| Molecular Formula | C10H6N2O2 |
| Molecular Weight | 186.17 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.
CATO supplies Cyclobuta[b]quinoxaline-1,2(3H,8H)-dione (CAS 20420-52-4), a certified reference material (molecular formula C10H6N2O2, MW 186.17 g/mol) for analytical method development and quality control.
Cyclobuta[b]quinoxaline-1,2(3H,8H)-dione (C10H6N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C10H6N2O2 |
| Molecular Weight | 186.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 2 |
Related Cyclobuta Standards
- Cyclobuta[b]pyrido[2,3-e]pyrazine-6,7(5H,8H)-dione (CAS 33528-01-7)
- Cyclobuta[b]pyrido[3,4-e]pyrazine-6,7(5H,8H)-dione (CAS 33528-02-8)
- Cyclobuta[b]quinoxaline-1,2-dione (CAS 64014-14-8)
- Cyclobuta[b]naphthalene-1,2-dione (CAS 41634-34-8)
- Cyclobuta[1,2-b:4,3-b']dipyridine (CAS 259-84-7)
- Cyclobuta[b]quinoxaline (CAS 6847-24-1)
- Cyclobuta[g]quinoxaline (CAS 286390-29-2)
- 2H-Cyclobuta[4,5]pyrrolo[2,1-b][1,3]oxazine (CAS 350027-29-1)
Recommended Standards
- Chromeno[4,3-c]pyrazol-4(1H)-one (CAS 4744-64-3)
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- Dimethyl 4,5-dihydro-1H-pyrazole-3,4-dicarboxylate (CAS 87387-81-3)
- 2-((1-(5-Methyl-1H-imidazol-4-yl)ethyl)thio)ethanamine (CAS 66287-37-4)
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- 2-[(pyrrolidine-1-carbonyl)amino]acetic acid (CAS 501652-98-8)
- Iopamidol Impurity 40 (CAS CATO-C4X-145040)
- 1-tert-butyl 4-methyl 4-fluoropiperidine-1,4-dicarboxylate (CAS 1048994-21-3)
- 1-Chloro-5-methylhexane (CAS 33240-56-1)
- (E)-7-[4-(4-Fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl]-3,5-dioxo-6-hep (CAS 1005003-78-0)
- {2-[(4-ethylpiperazin-1-yl)methyl]phenyl}methanamine (CAS 926226-18-8)
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