Bis(4-bromophenyl)selane CAS 33834-56-9
| CAS No. | 33834-56-9 |
| Molecular Formula | C12H8Br2Se |
| Molecular Weight | 390.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Bis(4-bromophenyl)selane (CAS 33834-56-9), molecular formula C12H8Br2Se and molecular weight 390.96 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H8Br2Se, Bis(4-bromophenyl)selane contains bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 390.96 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).
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 | C12H8Br2Se |
| Molecular Weight | 390.96 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Br-containing |
Related Bis Standards
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- 2-[(4-Bromophenyl)sulfanyl]-1-methyl-5-nitro-1H-indole-3-carbaldehyde (CAS 338416-11-8)
- 2-{[4-(4-bromophenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetic acid (CAS 893725-79-6)
- 3-(N-(4-bromophenyl)sulfamoyl)-4-chlorobenzoic acid (CAS 380193-41-9)
- 5-[(4-bromophenyl)sulfamoyl]-2-chlorobenzoic acid (CAS 306764-81-8)
- 5-(4-Bromophenyl)-1-ethyl-2-((4-fluorobenzyl)thio)-1H-imidazole (CAS 1206991-25-4)
- N-(4-bromophenyl)-2-(4-chloro-2-methylphenoxy)-2,2-difluoroacetamide (CAS 400087-92-5)
- (2Z)-2-({[4-(4-bromophenyl)-1,3-thiazol-2-yl]amino}methylidene)-4,4-dimethyl-3-oxopentanenitrile (CAS 1020252-68-9)
Recommended Standards
- Meclozine (CAS 569-65-3)
- 3-(Benzyloxy)-5-bromo-2-iodopyrazine (CAS 1211486-65-5)
- H-D-Val-Leu-Lys-chloromethylketone (CAS 75590-15-7)
- 9-Bromo-2-iodo-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine (CAS 1282516-69-1)
- Quinine 1'-Oxide (CAS 54821-44-2)
- 2-(6-Chloropyridin-2-yl)hydrazine-1-carboxamide (CAS 320415-91-6)
- Parsaclisib hydrochloride, >98% (HPLC) (CAS 1995889-48-9)
- Methyl 3-(5-formyl-3-thienyl)benzoate (CAS 893736-96-4)
- 2-(3,5-Dimethyl-1-(pyridin-2-yl)-1H-pyrazol-4-yl)ethan-1-amine (CAS 1177355-64-4)
- 3-[(Phenethyloxy)methyl]piperidinehydrochloride (CAS 1093653-12-3)
- 4-(4-(2,5-Dimethyl-1H-pyrrol-1-yl)phenyl)pyrimidin-2-amine (CAS 865658-21-5)
- N-(4-Bromobenzylidene)pyrimidin-2-amine (CAS 146462-28-4)
- Indobufen Impurity 85 (CAS CATO-C4X-179285)
- Semaglutide Impurity 15 (CAS CATO-C4X-222615)
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