2',3,4,5-Tetrafluoro-4''-propyl-1,1':4',1''-terphenyl CAS 205806-87-7
| CAS No. | 205806-87-7 |
| Molecular Formula | C21H16F4 |
| Molecular Weight | 344.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C21H16F4, 2',3,4,5-Tetrafluoro-4''-propyl-1,1':4',1''-terphenyl contains fluorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 344.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
2',3,4,5-Tetrafluoro-4''-propyl-1,1':4',1''-terphenyl (CAS 205806-87-7), molecular formula C21H16F4 and molecular weight 344.35 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C21H16F4 |
| Molecular Weight | 344.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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.) | 2015 |
| Halogen Content | F-containing |
Related Tetrafluoro Standards
- 2,3'',4'',5''-Tetrafluoro-4-propyl-1,1':4',1''-terphenyl (CAS 205806-88-8)
- 4,5,5,5-Tetrafluoro-4-(perfluoropropoxy)pentan-1-ol (CAS 243128-41-8)
- 1,2,3,4-Tetrafluoro-7-phenoxyacridine (CAS 643032-47-7)
- 1,2,4,5-Tetrafluoro-3,6-bis(2,2,2-trifluoroethoxy)benzene (CAS 6715-31-7)
- (E)-4,5,5,5-tetrafluoro-4-(1,1,2,2,3,3,3-heptafluoropropoxy)pent-2-en-1-ol (CAS 261760-10-5)
- 1,1,1,2-Tetrafluoro-2-trifluoromethoxy-4-iodobutane (CAS 200501-96-8)
- rel-2,3',4',5'-Tetrafluoro-4-((1s,4r)-4-propylcyclohexyl)-1,1'-biphenyl (CAS 173837-35-9)
- 2,3,5,6-Tetrafluoro-4-((8-hydroxyoctyl)oxy)benzoic acid (CAS 1017789-71-7)
Recommended Standards
- N-[(1R,2R)-2-Amino-1,2-diphenylethyl]-1,1,1-trifluoromethanesulfonamide (CAS 852212-89-6)
- 4,4'-(Propane-1,3-diylbis(oxy))bis(3-methoxybenzaldehyde) (CAS 101913-37-5)
- Ethyl 3-((3-cyano-4-(trifluoromethyl)-6,7-dihydro-5H-cyclopenta[b]pyridin-2-yl)thio)propanoate (CAS 626227-09-6)
- 4-Oxo-4-(2-phenoxyethoxy)-3-((pyridin-3-ylmethyl)amino)butanoic acid (CAS 1024019-65-5)
- 1-(2-Methylpyrazolo[1,5-a]pyrazin-4-yl)-1H-pyrazole-3-carboxylic acid (CAS 1710674-95-5)
- 2-[(4-methoxyphenyl)methyl]pyrazolo[4,3-b]pyridine (CAS 2245763-42-0)
- 4-(Difluoromethyl)-3-fluoro-6-iodopyridin-2-ol (CAS 1806963-28-9)
- 8-Fluoro-5-iodo-2,6-dimethylquinoline (CAS 1420790-48-2)
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- (S)-3-(1-Aminoethyl)oxetan-3-ol (CAS 2380433-33-8)
- 1-(5-(4-Chlorophenyl)thiophen-2-yl)ethan-1-amine (CAS 1094424-71-1)
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