Isobenzofuro[5,6-d]isoxazole CAS 267-37-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 267-37-8 |
| Molecular Formula | C9H5NO2 |
| Molecular Weight | 159.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Isobenzofuro[5,6-d]isoxazole (CAS 267-37-8), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C9H5NO2. Molecular weight: 159.14 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C9H5NO2 |
| Molecular Weight | 159.14 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Isobenzofuro Standards
- Isobenzofuro[4,5-d]oxazole (CAS 117272-33-0)
- Isobenzofuro[5,6-d]oxazole (CAS 130700-87-7)
- Isobenzofuro[4,5-d]isoxazole (CAS 98822-08-3)
- Isobenzofuro[5,4-d]oxazole (CAS 214489-59-5)
- 1H-Isobenzofuro[5,6-d]imidazole-5,7-dione (CAS 167993-16-0)
- 549-06-4 7H-Isobenzofuro(4,5-b)(1,4)benzodioxepin-11-carboxaldehyde, 1,3-dihydro-1,4-dihydroxy-10-methoxy-5,8-dimethyl-3,7-dioxo- 1,3-Dihydro-1,4-dihydroxy-10-methoxy-5,8-dimethyl-3,7-dioxo-7H-isobenzofuro(4,5-b)(1,4)benzodioxepin-11-carboxaldehyde NSC 87511 Stictic acid (CAS 549-06-4)
Recommended Standards
- Isoquinoline-5,8-dione (CAS 50-46-4)
- Isoxazolo[5,4-b]pyridine-3-acetonitrile (CAS 58035-53-3)
- H-g-Methylene-DL-Glu-OH (F-1815.0250) (CAS 7150-74-5)
- (11Z)-16-[[2-(Methylamino)-2-oxoacetyl]amino]-11-hexadecenoic Acid (CAS 1235543-17-5)
- 3,4-dimethyl-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 54770-19-3)
- 1185166-61-3 Methyl 5-Oxohexanoate-1,4,5-13C3 (CAS 1185166-61-3)
- 2-(1-Adamantyl)-4,5-dihydro-1H-imidazole (CAS 52725-79-8)
- 2,3-Difluoro-5-nitrobenzamide (CAS 1806388-74-8)
- Fruquintinib Impurity 9 (CAS CATO-C4X-30379)
- Calcitonin N-Terminal Flanking Peptide (human) (CAS 118277-01-3)
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 13829788188 / jacky.chen@cato-chem.com