5-Ethynylbenzo[d][1,3]dioxole CAS 57134-53-9
| CAS No. | 57134-53-9 |
| Molecular Formula | C9H6O2 |
| Molecular Weight | 146.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-Ethynylbenzo[d][1,3]dioxole 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 5-Ethynylbenzo[d][1,3]dioxole (CAS 57134-53-9), a certified reference material (molecular formula C9H6O2, MW 146.14 g/mol) for analytical method development and quality control.
The molecular framework of 5-Ethynylbenzo[d][1,3]dioxole (C9H6O2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H6O2 |
| Molecular Weight | 146.14 g/mol |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Ethynylbenzo Standards
- 2-Ethynylbenzo[d]oxazole (CAS 40176-79-2)
- 5-Ethynylbenzo[b]thiophene (CAS 1374563-50-4)
- 2-Ethynylbenzo[b]thiophene (CAS 141580-93-0)
- 7-Ethynylbenzo[b]thiophene (CAS 1516575-71-5)
- 4-Ethynylbenzo[b]thiophene (CAS 153798-78-8)
- 3-Ethynylbenzo[b]thiophene (CAS 569353-00-0)
- 6-Ethynylbenzo[d]oxazol-2(3H)-one (CAS 1207594-32-8)
- 5-Ethynylbenzo[d]thiazole (CAS 1158749-23-5)
Recommended Standards
- 5-(hydroxymethyl)furan-3-carboxylic acid (CAS 246178-75-6)
- 5-Fluoro-4-sulfanylidene-1,2,3,4-tetrahydropyrimidin-2-one (CAS 671-41-0)
- 5-(Hydroxymethyl)-5-methyl-1,4-dioxan-2-one (CAS 2786775-16-2)
- 5-Hydroxyhexahydropyridazine-3-carboxylic acid (CAS 62222-03-1)
- 3-(2-((3,4-Dichlorophenyl)amino)thiazol-5-yl)-3-oxo-N-phenylpropanamide (CAS 241132-49-0)
- 1-Ethyl-2-oxoimidazolidine-4-carboxylic acid (CAS 1510646-24-8)
- 1-(2-Methoxyethyl)-5-phenyl-1H-imidazol-2-amine (CAS 842973-94-8)
- Benzo[1,2-b;4,5-b']bisbenzofuran" (CAS 208-37-7)
- Ethyl (3-hydroxypropyl) carbonate (CAS 62502-19-6)
- 7-Hydroxy-4-(3-nitrophenyl)-2h-chromen-2-one (CAS 892559-62-5)
- N-(4-chloro-2-methylphenyl)-2-(1H-1,2,4-triazol-1-yl)acetamide (CAS 478047-28-8)
- 5,5-Difluoro-4,5,6,6a-tetrahydro-3aH-cyclopenta[d]isoxazole-3-carbaldehyde (CAS 1823941-84-9)
- Methyl 4-hydroxy-1H-imidazole-5-carboxylate (CAS 98876-02-9)
- D-Thr7-Tirzepatide (CAS CATO-CPTD788924)
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