Isobenzofuro[4,5-d]oxazole CAS 117272-33-0
| CAS No. | 117272-33-0 |
| Molecular Formula | C9H5NO2 |
| Molecular Weight | 159.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Isobenzofuro[4,5-d]oxazole 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.
CATO supplies Isobenzofuro[4,5-d]oxazole (CAS 117272-33-0), a certified reference material (molecular formula C9H5NO2, MW 159.14 g/mol) for analytical method development and quality control.
Isobenzofuro[4,5-d]oxazole (C9H5NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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.) | 1990 |
| Nitrogen Atoms | 1 |
Related Isobenzofuro Standards
- 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)
- Isobenzofuro[5,6-d]isoxazole (CAS 267-37-8)
- 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
- 6-Hydroxy-1H-pyrrolo[2,3-b]pyridine-4-carbonitrile (CAS 1167056-72-5)
- trans-ACBD (CAS 117488-23-0)
- 2-Oxo-2,3-dihydro-1H-pyrrolo[3,2-b]pyridine-5-carbonitrile (CAS 1167056-59-8)
- L-CCG-I (CAS 117857-93-9)
- 4,5-Dimethylpicolinic acid (CAS 802256-42-4)
- 4-(3-Nitrophenoxy)benzoic acid (CAS 99847-17-3)
- N-(4-Bromo-3-chloro-2-hydroxyphenyl)acetamide (CAS 2409579-85-5)
- 6-Chloro-4-hydrazinyl-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine (CAS 2080412-73-1)
- 6-Bromo-3-(bromomethyl)-2-chloropyridine (CAS 1227509-75-2)
- 2-((3,4-Difluorophenyl)amino)-3a,4,6,6a-tetrahydrothieno[3,4-d]thiazole 5,5-dioxide (CAS 866015-26-1)
- 2-Chloro-1-(1-ethyl-2,5-dimethyl-1H-pyrrol-3-yl)ethanone (CAS 784172-19-6)
- (9H-Fluoren-9-yl)methyl (3-hydroxy-9H-xanthen-9-yl)carbamate (CAS 114587-60-9)
- 4-(Pyrrolidin-1-yl)butan-2-one (CAS 33598-33-3)
- Semaglutide impurity 29 (CAS 1188328-22-4)
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