4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyrazine CAS 178472-31-6
| CAS No. | 178472-31-6 |
| Molecular Formula | C6H4N4O2 |
| Molecular Weight | 164.12 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 4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyrazine (CAS 178472-31-6), a certified reference material (molecular formula C6H4N4O2, MW 164.12 g/mol) for analytical method development and quality control.
Structurally, 4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyrazine (C6H4N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 164.12 g/mol, it falls into the medium-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).
CATO manufactures 4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyrazine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H4N4O2 |
| Molecular Weight | 164.12 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Nitrogen Atoms | 4 |
Related H Standards
- Isoxazolo[3,4-b]pyridine-3-carboxylic acid (CAS 1368353-68-7)
- 4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyrimidine (CAS 178472-32-7)
- 4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyridine (CAS 106990-53-8)
- 1-(Isoxazolo[3,4-b]pyridin-3-yl)ethanone (CAS 14133-18-7)
- 1-(Isoxazolo[5,4-b]pyridin-3-yl)ethanone (CAS 1785305-56-7)
- 7H-Isoxazolo[4,5-c]pyrazolo[1,2-a]pyridazine (CAS 121014-31-1)
- Isoxazolo[4',5':3,4]benzo[1,2-c][1,2,5]oxadiazole (CAS 126877-68-7)
- Isoxazolo[5',4':3,4]benzo[1,2-c][1,2,5]oxadiazole (CAS 133818-22-1)
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- 4-Nitrobenzoxazole (CAS 163808-13-7)
- 2-Ethoxy-5-methylpyrazine (CAS 67845-34-5)
- 2-(2,2-Dimethoxyethyl)benzaldehyde (CAS 112396-12-0)
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- (4-Bromophenyl)(4-fluorophenyl)methanol (CAS 3851-47-6)
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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