Isoxazolo[5,4-d]pyrimidine CAS 272-04-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 272-04-8 |
| Molecular Formula | C5H3N3O |
| Molecular Weight | 121.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Isoxazolo[5,4-d]pyrimidine (CAS 272-04-8) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C5H3N3O. Molecular weight: 121.10 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C5H3N3O |
| Molecular Weight | 121.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
Related Isoxazolo Standards
- Isoxazolo[3,4-d]pyrimidine (CAS 28648-19-3)
- Isoxazolo[4,3-d]pyrimidine (CAS 272-58-2)
- Isoxazolo[4,3-b]pyridine (CAS 173894-73-0)
- Isoxazolo[4,5-b]pyridine (CAS 76807-98-2)
- Isoxazolo[5,4-b]pyridine (CAS 272-03-7)
- Isoxazolo[5,4-c]pyridine (CAS 64761-69-9)
- Isoxazolo[4,5-b]pyridin-3-amine (CAS 114080-93-2)
- Isoxazolo[5,4-c]pyridin-3-amine (CAS 114080-94-3)
Recommended Standards
- Oxazolo[4,5-d]pyrimidine (CAS 42850-93-1)
- Oxazolo[5,4-d]pyrimidine (CAS 273-64-3)
- Favipiravir Impurity 33 (CAS 81411-78-1)
- (4-(n-Cyclopropylsulfamoyl)-2-methylphenyl)boronic acid (CAS 1217501-49-9)
- 2-(2-Chloroacetamido)-2-methylpropanoic acid (CAS 95038-11-2)
- Benzyl 3,4-diaminopiperidine-1-carboxylate (CAS 1247884-89-4)
- 4-Chloro-2-ethoxy-1-methoxybenzene (CAS 860209-40-1)
- Methyl 2-cyano-2-(4-methylbenzyl)-3-(p-tolyl)propanoate (CAS 1202778-97-9)
- 2,2,2-Trifluoro-1-(4-fluoro-3-methylphenyl)ethan-1-amine (CAS 1213083-68-1)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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