2-Ethynylbenzene-1,3-diol CAS 466635-66-5
| CAS No. | 466635-66-5 |
| Molecular Formula | C8H6O2 |
| Molecular Weight | 134.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Ethynylbenzene-1,3-diol (CAS 466635-66-5), molecular formula C8H6O2 and molecular weight 134.13 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-Ethynylbenzene-1,3-diol (C8H6O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 134.13 g/mol, it falls into the low-molecular-weight range. 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).
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.
CATO manufactures 2-Ethynylbenzene-1,3-diol 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.
Physical & Chemical Properties
| Molecular Formula | C8H6O2 |
| Molecular Weight | 134.13 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Ethynylbenzene Standards
- 3-Ethynylbenzene-1,2-diol (CAS 1314907-42-0)
- 5-Ethynylbenzene-1,3-diol (CAS 145078-84-8)
- 4-Ethynylbenzene-1,3-diol (CAS 1804946-18-6)
- 2-Ethynylbenzene-1,4-diol (CAS 74047-22-6)
- 4-Ethynylbenzene-1,2-diol (CAS 366808-04-0)
- 3-Ethynylbenzene-1,2-diamine (CAS 61921-13-9)
- 4-Ethynylbenzene-1,2-diamine (CAS 58297-31-7)
- 1-Ethyl-2-ethynylbenzene (CAS 75659-49-3)
Recommended Standards
- 2-Deoxy-D-xylose (CAS 5284-18-4)
- 2-Deoxy-D-erythro-pentopyranose (CAS 35536-75-5)
- 2-hydroxy-3-methoxy-2-methylpropanoic acid (CAS 672314-91-9)
- 2,5-Dihydroxypentanoic acid (CAS 21577-52-6)
- 3-Bromo-6-ethynylquinoline (CAS 2442523-78-4)
- 1-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-2-yl)ethan-1-one (CAS 1419562-95-0)
- 3-(3-Chloro-4-fluorophenyl)benzonitrile (CAS 1365272-66-7)
- 6-(4-(tert-Butyl)phenyl)pyridazin-3-ol (CAS 58897-73-7)
- 1-(3-Hydroxypiperidin-1-yl)ethanone (CAS 4045-27-6)
- 1,2,2-Trimethylcyclobutane-1,3-diol (CAS 2231673-24-6)
- {2-[(trifluoromethyl)sulfanyl]phenyl}methanamine (CAS 236736-24-6)
- Boc-cis-4-fluoro-Pro-OH (CAS 203866-13-1)
- N-butyl-3-oxobutanamide (CAS 1001-24-7)
- D-β-Asp15-Tirzepatide (CAS CATO-CPTD788930)
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