1,4-Bis((4-fluorophenyl)ethynyl)benzene CAS 131941-37-2
| CAS No. | 131941-37-2 |
| Molecular Formula | C22H12F2 |
| Molecular Weight | 314.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to fluorine substitution, a polycyclic aromatic system, 1,4-Bis((4-fluorophenyl)ethynyl)benzene is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 314.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 1,4-Bis((4-fluorophenyl)ethynyl)benzene (CAS 131941-37-2), a certified reference material (molecular formula C22H12F2, MW 314.33 g/mol) for analytical method development and quality control.
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 | C22H12F2 |
| Molecular Weight | 314.33 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | F-containing |
Related Bis Standards
- (2Z)-3-[(4-Fluorophenyl)amino]-2-[4-(3-fluoropropoxy)phenyl]prop-2-enenitrile (CAS 477888-38-3)
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- 2-((4-(4-Fluorophenyl)phthalazin-1-yl)thio)acetic acid (CAS 554404-23-8)
- 3'-(4-Fluorophenyl)-1,2-dihydrospiro[indole-3,2'-[1,3]thiazolidine]-2,4'-dione (CAS 79962-58-6)
- 2-(4-Fluorophenyl)-1H-imidazo[4,5-b]phenazine (CAS 114991-81-0)
- N-(4-Fluorophenyl)-6-morpholino-9H-purin-2-amine (CAS 1251578-67-2)
- 3-(2-Fluorophenyl)-4-((3-(furan-2-yl)allylidene)amino)-1H-1,2,4-triazole-5(4H)-thione (CAS 676339-23-4)
- 3-(4-Fluorophenyl)-4-((3-(furan-2-yl)allylidene)amino)-1H-1,2,4-triazole-5(4H)-thione (CAS 675121-45-6)
Recommended Standards
- Ophiopogonanone B (CAS 1316759-83-7)
- Angophorol (CAS 133442-54-3)
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- Methyl 5-acetyl-2-((4-methoxybenzyl)oxy)benzoate (CAS 1416339-27-9)
- But-2-yn-1-ylglycine (CAS 1247896-05-4)
- 4-Cyclohexyl-5-(4-methoxyphenyl)-4H-1,2,4-triazole-3-thiol (CAS 309272-77-3)
- 2-((3-Chlorobenzyl)oxy)-5-methoxybenzaldehyde (CAS 888710-32-5)
- n-(2,4-Difluorophenyl)-2-phenoxyacetamide (CAS 303794-31-2)
- 2-Formylquinoline-4-carboxamide (CAS 66975-43-7)
- 4-Chlorotetrahydro-2H-pyran-4-carbonitrile (CAS 99338-30-4)
- 2-(Thiophen-2-yl)ethanethioamide (CAS 58197-03-8)
- N1-(2-Chlorobenzyl)-N2-(isoxazol-3-yl)oxalamide (CAS 941921-45-5)
- 3-(4-Fluorophenyl)prop-2-en-1-amine (CAS 88536-45-2)
- [Tyr0] Fibrinopeptide A, human (CAS 103226-11-5)
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