Bis(4-bromophenyl)acetylene CAS 2789-89-1
| CAS No. | 2789-89-1 |
| Molecular Formula | C14H8Br2 |
| Molecular Weight | 336.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 336.02 g/mol gives Bis(4-bromophenyl)acetylene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Bis(4-bromophenyl)acetylene (CAS 2789-89-1) is a high-purity analytical reference standard with the molecular formula C14H8Br2 and a molecular weight of 336.02 g/mol.
Based on its molecular formula C14H8Br2, Bis(4-bromophenyl)acetylene contains bromine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 336.02 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Bis(4-bromophenyl)acetylene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H8Br2 |
| Molecular Weight | 336.02 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Bis Standards
- 1,2-Bis(3-bromophenyl)ethyne (CAS 153404-60-5)
- 1,2-Bis(2-bromophenyl)ethyne (CAS 38399-13-2)
- 3-(4-Bromophenyl)-5-(trifluoromethyl)isoxazole-4-carboxylic acid (CAS 1159978-82-1)
- 1-(4-bromophenyl)-5-(trifluoromethyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1221724-13-5)
- 1-(3-Bromophenyl)-5-(trifluoromethyl)-1h-1,2,3-triazole-4-carboxylic acid (CAS 1221725-66-1)
- 1-(2-Bromophenyl)-5-(trifluoromethyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1312135-90-2)
- 2-(2-Bromophenyl)-5-(trifluoromethyl)-2H-1,2,3-triazole-4-carboxylic acid (CAS 1708168-99-3)
- 1-(4-Bromophenyl)-2-(4-nitrophenoxy)ethan-1-one (CAS 111946-84-0)
Recommended Standards
- Benzyl 2,4-Dibromobutyrate (CAS 23085-60-1)
- Ethyl 2,3-dibromo-3-phenylpropionate (CAS 5464-70-0)
- 4,5-Dibromo-2-cyclohexylpyridazin-3(2H)-one (CAS 23215-69-2)
- Methyl 2,6-dibromo-4-isopropylbenzoate (CAS 2586126-83-0)
- 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a]pyridine (CAS 1873385-99-9)
- ((1,2-Diphenylethene-1,2-diyl)bis(4,1-phenylene))diboronicacid (CAS 1054451-31-8)
- 7-Bromo-3-iodo-1H-pyrrolo[2,3-c]pyridine (CAS 1190318-20-7)
- 1,3-Benzenedicarboxylic acid, polymer with 1,4-benzenedicarboxylic acid and 2,2-dimethyl-1,3-propanediol (CAS 25214-38-4)
- 1-(3-Fluoro-5-(trifluoromethyl)phenyl)butan-1-ol (CAS 1443347-29-2)
- 3-(4-(2-Chloro-4-nitrophenyl)buta-1,3-dien-1-yl)benzene-1-sulfonyl fluoride (CAS 31368-27-1)
- 4h,6h,7h-Thieno[3,2-c]pyran-4-ylmethanamine (CAS 63932-26-3)
- 2-Methyl-4-(1-pyrrolidinylcarbonyl)aniline (CAS 926188-33-2)
- 1-(3-Piperidinylmethyl)-1,2,3,4-tetrahydroquinoline dihydrochloride (CAS 1220021-34-0)
- Des-Phe22-Tirzepatide (CAS CATO-CPTD788951)
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