4,4'-Diethoxy-1,1'-biphenyl CAS 7168-54-9
| CAS No. | 7168-54-9 |
| Molecular Formula | C16H18O2 |
| Molecular Weight | 242.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4,4'-Diethoxy-1,1'-biphenyl is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4,4'-Diethoxy-1,1'-biphenyl (CAS 7168-54-9), molecular formula C16H18O2 and molecular weight 242.31 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4,4'-Diethoxy-1,1'-biphenyl (C16H18O2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C16H18O2 |
| Molecular Weight | 242.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
Related Diethoxy Standards
- 2,2'-Diethoxy-1,1'-biphenyl (CAS 7168-53-8)
- 2-[(4,4-Diethoxy-2-butyn-1-yl)oxy]tetrahydropyran (CAS 99805-29-5)
- 4,5-Diethoxy-2-mercaptobenzoic acid (CAS 100059-52-7)
- 2,2-Diethoxy-N-((6-fluoropyridin-2-yl)methyl)ethan-1-amine (CAS 1799824-44-4)
- 2-((4,6-Diethoxy-1,3,5-triazin-2-yl)(methyl)amino)ethanol (CAS 53207-76-4)
- 1,1-Diethoxy-2-iodoethane (CAS 51806-20-3)
- 4,8-Diethoxy-1-naphthaldehyde (CAS 1160995-78-7)
- 2,7-Diethoxy-1-naphthaldehyde (CAS 433254-08-1)
Recommended Standards
- 4,4'-Bis(methoxymethyl)-1,1'-biphenyl (CAS 3753-18-2)
- 4-Benzyloxy-2,3-dimethylbenzyl alcohol (CAS 2244107-71-7)
- 4,4',5,5'-Tetramethyl-[1,1'-biphenyl]-2,2'-diol (CAS 62156-67-6)
- 4-isopropyl-7-methoxy-benzofuran-2-carboxylic acid (CAS 2490417-95-1)
- 1-Methyl-N-(4-methylphenyl)-4-(phenylimino)-1H,4H,7H-pyrazolo[3,4-d]pyrimidin-6-amine (CAS 878062-98-7)
- Tert-butyl (6-oxa-2-azaspiro[3.4]Octan-8-yl)carbamate (CAS 2306265-38-1)
- 5-Bromo-2-(dimethylamino)benzonitrile (CAS 501086-59-5)
- (s)-1-Methyl-3-(piperidin-3-yl)-1,3-dihydro-2h-benzo[d]imidazol-2-one hydrochloride (CAS 2680615-69-2)
- Dimethyl 1,1'-(propane-1,3-diyl)bis(aziridine-2-carboxylate) (CAS 473573-76-1)
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