Benzoselenazolium, 3-ethyl-2-[3-(3-ethyl-2(3H)-benzoselenazolylidene)-2-methyl-1-propen-1-yl]-, bromide CAS 24687-31-8
| CAS No. | 24687-31-8 |
| Molecular Formula | C22H23N2Se2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Benzoselenazolium, 3-ethyl-2-[3-(3-ethyl-2(3H)-benzoselenazolylidene)-2-methyl-1-propen-1-yl]-, bromide (C22H23N2Se2Br) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Benzoselenazolium, 3-ethyl-2-[3-(3-ethyl-2(3H)-benzoselenazolylidene)-2-methyl-1-propen-1-yl]-, bromide (CAS 24687-31-8), molecular formula C22H23N2Se2Br and molecular weight 553.29 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C22H23N2Se2 Br |
| Molecular Weight | 553.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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