5,6-Dimethoxybenzo[c]isoxazole CAS 148495-00-5
| CAS No. | 148495-00-5 |
| Molecular Formula | C9H9NO3 |
| Molecular Weight | 179.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,6-Dimethoxybenzo[c]isoxazole (CAS 148495-00-5), molecular formula C9H9NO3 and molecular weight 179.17 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5,6-Dimethoxybenzo[c]isoxazole (C9H9NO3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H9NO3 |
| Molecular Weight | 179.17 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 methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 1 |
Related Dimethoxybenzo Standards
- 2,5-Dimethoxybenzo[d]oxazole (CAS 103440-82-0)
- 2,7-Dimethoxybenzo[d]oxazole (CAS 103440-84-2)
- 2,4-Dimethoxybenzo[d]oxazole (CAS 103441-78-7)
- 4,6-Dimethoxybenzo[d]isoxazole (CAS 71064-07-8)
- 4,6-Dimethoxybenzo[d][1,3]dioxole (CAS 68803-49-6)
- 4,7-Dimethoxybenzo[d][1,3]dioxole (CAS 23731-75-1)
- 5,6-Dimethoxybenzo[d][1,3]dioxole (CAS 3214-12-8)
- 4,5-Dimethoxybenzo[b]thiophene (CAS 103204-79-1)
Recommended Standards
- Methyl 2-(4-aminophenyl)-2-oxoacetate (CAS 147983-65-1)
- 6-Cyclopropyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid (CAS 150190-28-6)
- 1,1-Dimethylfuro[3,4-c]pyridine-3,4(1H,5H)-dione (CAS 145887-88-3)
- 4-Nitrocinnamyl Alcohol (CAS 1504-63-8)
- N-(4-fluorophenyl)-2-(4-formylphenoxy)acetamide (CAS 428474-35-5)
- 1007874-03-4 3-chloro-3-(3-fluoro-phenyl)-2-oxo-propionic acid methyl ester (CAS 1007874-03-4)
- 1-((4-Iodophenyl)sulfonyl)-4-phenylpiperazine (CAS 309272-60-4)
- Methyl 4-amino-1-ethyl-1H-indole-6-carboxylate (CAS 734532-90-2)
- 2-(Bromomethyl)-1,3-dichloro-4-methylbenzene (CAS 1379342-39-8)
- 1,4-diazaspiro[5.6]dodecan-5-one (CAS 1239746-72-5)
- (5-Bromothiophen-2-yl)(piperazin-1-yl)methanone (CAS 395648-06-3)
- 5-(4-Nitrophenyl)-N-phenyl-4,5-dihydro-1,3-thiazol-2-amine (CAS 379726-93-9)
- N-(4-Aminophenyl)-2-phenylacetamide (CAS 346583-86-6)
- GnRH Associated Peptide (GAP) (1-13), human (CAS 100111-07-7)
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