1,2-Bis(4-bromophenyl)diselane CAS 20541-48-4
| CAS No. | 20541-48-4 |
| Molecular Formula | C12H8Br2Se2 |
| Molecular Weight | 469.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 469.92 g/mol gives 1,2-Bis(4-bromophenyl)diselane distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,2-Bis(4-bromophenyl)diselane (CAS 20541-48-4), molecular formula C12H8Br2Se2 and molecular weight 469.92 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to bromine substitution, an aromatic ring system, 1,2-Bis(4-bromophenyl)diselane is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 469.92 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
CATO manufactures 1,2-Bis(4-bromophenyl)diselane under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H8Br2Se2 |
| Molecular Weight | 469.92 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
Related Bis Standards
- 2-[(4-Bromophenyl)sulfanyl]-6-(3-chlorophenyl)-4-(trifluoromethyl)pyridine-3-carbonitrile (CAS 338963-35-2)
- 2-((5-(2-Bromophenyl)-1,3,4-oxadiazol-2-yl)thio)-N-(4-chloro-3-nitrophenyl)acetamide (CAS 332154-88-8)
- 2,4-Bis(4-bromophenyl)-2-methyl-2,3-dihydro-1H-1,5-benzodiazepine (CAS 89586-99-2)
- 2-((4-(4-Bromophenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)-1-(4-fluorophenyl)ethanone (CAS 477330-58-8)
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-1-(4-fluorophenyl)ethanone (CAS 477329-76-3)
- 2-((2-(4-Bromophenyl)-2-oxoethyl)thio)-3-phenyl-6-(trifluoromethyl)pyrimidin-4(3H)-one (CAS 692287-52-8)
- N-(2-Bromophenyl)-2-((5-(2-bromophenyl)-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 332100-69-3)
- N-(4-bromophenyl)-2-((5-(2-bromophenyl)-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 334503-71-8)
Recommended Standards
- 1-(4-Chlorobenzenesulfonyl)-4-{5-[3-(trifluoromethyl)phenyl]-1H-pyrazol-3-yl}piperidine (CAS 1025724-67-7)
- 4-(2-(2-Chloro-4-(4,6-diamino-2,2-dimethyl-1,3,5-triazin-1(2H)-yl)phenoxy)ethoxy)benzene-1-sulfonyl fluoride (CAS 20110-66-1)
- 1-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]-4-(2-naphthylsulfonyl)-1,4-diazepane (CAS 1024482-77-6)
- Avanafil Impurity 146 (CAS CATO-C4X-1118146)
- Butyldimethyl(perfluorophenyl)silane (CAS 63107-88-0)
- 3-Chloro-N-(6-ethoxypyrimidin-4-yl)-4-fluorobenzenesulfonamide (CAS 1396862-23-9)
- 5-((3-Methyl-4-nitrophenoxy)methyl)furan-2-carboxylic acid (CAS 832737-73-2)
- Apixaban Impurity 141 (CAS CATO-C4X-1088141)
- (Z)-3-(4-Fluorophenyl)-2-(6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-3-yl)acrylonitrile (CAS 1322213-52-4)
- 1858256-79-7 tert-Butyl 8-bromo-5-ethyl-1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indole-2-carboxylate MFCD29034973 (CAS 1858256-79-7)
- 1-(Isopropoxycarbonyl)-2,3-dihydro-1H-pyrrolizine-7-carboxylic acid (CAS 66635-70-9)
- 3-(((3-Methoxyphenyl)thio)methyl)-4-phenyl-1-(p-tolyl)azetidin-2-one (CAS 866049-19-6)
- 1-Amino-2,4-dibromo-7-chloroanthracene-9,10-dione (CAS 88605-95-2)
- Semaglutide impurity 193 (CAS CATO-C4X-2226193)
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