1,1′:4′,1′′-Terphenyl, 2′,3,4-trifluoro-4′′-pentyl- CAS 139677-35-3
| CAS No. | 139677-35-3 |
| Molecular Formula | C23H21F3 |
| Molecular Weight | 354.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,1′:4′,1′′-Terphenyl, 2′,3,4-trifluoro-4′′-pentyl- (C23H21F3) contains fluorine substitution, a polycyclic aromatic system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
1,1′:4′,1′′-Terphenyl, 2′,3,4-trifluoro-4′′-pentyl- (CAS 139677-35-3) is a high-purity analytical reference standard with the molecular formula C23H21F3 and a molecular weight of 354.41 g/mol.
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 | C23H21F3 |
| Molecular Weight | 354.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F-containing |
Related Terphenyl Standards
- 2-([1,1':3',1''-Terphenyl]-5'-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1036378-83-2)
- 2-([1,1':4',1''-Terphenyl]-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1080632-76-3)
- 2-([1,1':3',1''-Terphenyl]-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1115023-84-1)
- 2-([1,1':3',1''-Terphenyl]-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1385826-84-5)
- 2-([1,1':4',1''-Terphenyl]-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1401577-23-8)
- 2-([1,1':3',1''-Terphenyl]-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1872426-73-7)
- 2-([1,1':2',1''-Terphenyl]-4'-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2144472-52-4)
- 5'-Phenyl-[1,1':3',1''-terphenyl]-2'-carboxylic acid (CAS 5732-17-2)
Recommended Standards
- VS-5584, >98% (HPLC) (CAS 1246560-33-7)
- 4,4’,4’’-(1,3,5-Triazine-2,4,6-triyl)trianiline (CAS 14544-47-9)
- Fmoc-D-Orn-OH (CAS CATO-CPTD788357)
- 5,6-Bis(5-methoxythiophen-2-yl)pyrazine-2,3-dicarbonitrile (CAS 1818245-74-7)
- 2,4,6-Tribromobenzene-1,3,5-tricarbaldehyde (CAS 191529-09-6)
- Ethyl 4-(2,5-dimethyl-1h-pyrrol-1-yl)benzoate (CAS 5159-70-6)
- 1-(3-Bromo-2-(trifluoromethyl)-phenyl)-3,3-difluoroazetidine 1779122-74-5 (CAS 1779122-74-5)
- 4-((6-Chloro-2,3-dihydro-2-methyl-3-oxobenzo[b][1,4]oxazin-4-yl)methyl)benzonitrile (CAS 1159978-62-7)
- Semaglutide impurity 258 (CAS CATO-C4X-2226258)
- 2-Phenoxybutanenitrile (CAS 6441-22-1)
- 5-Bromo-2-(pyrimidin-2-yloxy)benzaldehyde (CAS 1260876-77-4)
- 2-Nitro-pyridine-4-carbazideazido(2-nitropyridin-4-yl)methanone (CAS 1167056-68-9)
- Oclacitinib impurity 11 (CAS CATO-C4X-301811)
- Semaglutide impurity 277 (CAS CATO-C4X-2226277)
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