1,1,2,2-Tetrakis(4-ethynylphenyl)ethene CAS 4863-90-5
| CAS No. | 4863-90-5 |
| Molecular Formula | C34H20 |
| Molecular Weight | 428.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1,1,2,2-Tetrakis(4-ethynylphenyl)ethene is closely related to a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1,1,2,2-Tetrakis(4-ethynylphenyl)ethene (CAS 4863-90-5) is a high-purity analytical reference standard with the molecular formula C34H20 and a molecular weight of 428.52 g/mol.
Based on its molecular formula C34H20, 1,1,2,2-Tetrakis(4-ethynylphenyl)ethene contains a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 428.52 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.
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 | C34H20 |
| Molecular Weight | 428.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 25.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Tetrakis Standards
- 1,4,8,11-Tetrakis(carbamoylmethyl)-1,4,8,11-tetraazacyclotetradecane (CAS 345612-63-7)
- 1,2,4,5-Tetrakis(tert-butylthio)benzene (CAS 447463-65-2)
- Tetrakis(4-cyanophenyl)ethylene (CAS 79802-71-4)
- Tetrakis(4-ethynylphenyl)silane (CAS 1390641-82-3)
- Tetrakis(2-ethylbutoxy)silane (CAS 78-13-7)
- Tetrakis(vinyldimethylsiloxy)silane (CAS 60111-54-8)
- 1,1,2,2-Tetrakis(4-methylphenyl)-1,2-ethanediol (CAS 913-86-0)
- Tetrakis(4-cyanophenyl)methane (CAS 121706-21-6)
Recommended Standards
- 1-((4S,5S)-2,2-dimethyl-5-vinyl-1,3-dioxolan-4-yl)-2-(trityloxy)ethanone (CAS 681853-96-3)
- 1,4-Diamino-2-(4-(heptyloxy)phenyl)anthracene-9,10-dione (CAS 92135-76-7)
- (E)-3-(4-(benzyloxy)phenyl)-1-(4-(2-methoxyphenyl)piperazin-1-yl)prop-2-en-1-one (CAS 477888-49-6)
- 11-(2-(2,6-Dioxopiperidin-3-yl)-1-oxoisoindolin-4-yl)undecanoic acid (CAS 2499815-05-1)
- Methyl (S)-5-nitro-6-((oxetan-2-ylmethyl)amino)picolinate (CAS 2230200-77-6)
- 1-(3-Methoxyphenyl)-6,6-dimethylpiperazine-2,3-dione (CAS 1142198-13-7)
- 2-(Bromomethyl)benzenesulfonamide (CAS 153974-13-1)
- 3-(Azepan-1-ylmethyl)-1H-indole-6-carbonitrile (CAS 1951444-89-5)
- 4-Amino-1-Boc-3-methylpiperidine (CAS 900642-17-3)
- 1-(3,4-Dichlorophenyl)-3-(4-((1-ethylpiperidin-3-yl)amino)-6-methylpyrimidin-2-yl)guanidine (CAS 21062-28-2)
- N-methyl-N-(2-methylbenzyl)glycine (CAS 1155504-86-1)
- Apalutamide Impurity 42 (CAS CATO-C4X-274942)
- (5-Phenyl-1,3-dimethyl)barbituricacid (CAS 7391-66-4)
- Semaglutide impurity 286 (CAS CATO-C4X-2226286)
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