2-(8-Ethynylnaphthalen-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane CAS 2229969-04-2
| CAS No. | 2229969-04-2 |
| Molecular Formula | C18H19BO2 |
| Molecular Weight | 278.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(8-Ethynylnaphthalen-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2229969-04-2), molecular formula C18H19BO2 and molecular weight 278.15 g/mol, is a CATO reference standard with documented purity and traceability.
2-(8-Ethynylnaphthalen-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (C18H19BO2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), 2-(8-Ethynylnaphthalen-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H19BO2 |
| Molecular Weight | 278.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
Related Ethynylnaphthalen Standards
Recommended Standards
- 2-(7-Fluorobenzo[b]thiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 958451-92-8)
- 2-amino-3-bromo-1,7-naphthyridine-6-carboxylic acid (CAS 2691878-65-4)
- 2-(5-(Methoxymethoxy)-2-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2470916-94-8)
- 3-(2-Bromophenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridine (CAS 916423-54-6)
- 1-((Benzyloxy)carbonyl)piperidine-3,5-dicarboxylic acid (CAS 2101206-64-6)
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- Nabumetone Impurity 7 (CAS 56894-99-6)
- Methyl (r)-3-amino-3-(4-chlorophenyl)propanoate hydrochloride (CAS 1217530-86-3)
- 2-Bromobenzene isothiocyanate (CAS 13037-60-0)
- [(2-Bromo-6-fluorophenyl)methyl](ethyl)amine (CAS 1595525-91-9)
- tert-Butyl (3S,5R)-3,4,5-trimethylpiperazine-1-carboxylate (CAS 1152111-15-3)
- (3-Methylenecyclohexyl)methanol (CAS 21368-12-7)
- Semaglutide Impurity 164 (CAS CATO-C4X-2226164)
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