4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyrimidine CAS 178472-32-7
| CAS No. | 178472-32-7 |
| Molecular Formula | C6H4N4O2 |
| Molecular Weight | 164.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyrimidine (CAS 178472-32-7) is a high-purity analytical reference standard with the molecular formula C6H4N4O2 and a molecular weight of 164.12 g/mol.
Based on its molecular formula C6H4N4O2, 4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyrimidine contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 164.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 4H-Isoxazolo[4,5-e][1,2,4]oxadiazolo[4,5-a]pyrimidine 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 | 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]pyrazine (CAS 178472-31-6)
- 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)
Recommended Standards
- 5-Cyano-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 1804409-12-8)
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- Di(isoxazol-4-yl)methanone (CAS 169378-47-6)
- (2-(Tert-butoxycarbonyl)pyridin-3-yl)boronic acid (CAS 2304635-14-9)
- 1-(2,4-Dimethylphenyl)-3-(2-hydroxyethyl)thiourea (CAS 52266-55-4)
- Tert-butyl 3-((3-methoxypropyl)amino)pyrrolidine-1-carboxylate (CAS 887587-38-4)
- 2-Amino-4-cyclopropylbutan-1-ol (CAS 1469114-84-8)
- 2-[(1S)-1-methoxyethyl]-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 2641451-45-6)
- 4-Chloro-2-(cyclopropylmethyl)-6-(1-methyl-1H-pyrazol-4-yl)pyrimidine (CAS 1713648-48-6)
- Bexarotene Impurity 3 (CAS CATO-C4X-29503)
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- 7-Amino-3-oxoisoindoline-4-carbonitrile (CAS 1370467-87-0)
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