| CAS No. | 5748-39-0 |
| Molecular Formula | C18H20O |
| Molecular Weight | 252.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
1-(4'-(tert-Butyl)-[1,1'-biphenyl]-4-yl)ethan-1-one (CAS 5748-39-0) is a high-purity analytical reference standard with the molecular formula C18H20O and a molecular weight of 252.35 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, 1-(4'-(tert-Butyl)-[1,1'-biphenyl]-4-yl)ethan-1-one is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 252.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1-(4'-(tert-Butyl)-[1,1'-biphenyl]-4-yl)ethan-1-one 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.
| Molecular Formula | C18H20O |
| Molecular Weight | 252.35 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |