1-Octadecyl-4-((1E,3E)-4-phenylbuta-1,3-dien-1-yl)pyridin-1-ium bromide CAS 165678-32-0
| CAS No. | 165678-32-0 |
| Molecular Formula | C33H50N |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1-Octadecyl-4-((1E,3E)-4-phenylbuta-1,3-dien-1-yl)pyridin-1-ium bromide (CAS 165678-32-0), a certified reference material (molecular formula C33H50NBr, MW 540.67 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution, 1-Octadecyl-4-((1E,3E)-4-phenylbuta-1,3-dien-1-yl)pyridin-1-ium bromide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 540.67 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C33H50N Br |
| Molecular Weight | 540.67 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 chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 448376BFQC 673-32-5 1-Phenyl-1-propyne Prop-1-ynylbenzene EINECS 211-607-7 UNII-448376BFQC (CAS 673-32-5)
- 5-Bromo-1-isopropylpyrimidin-2(1h)-one (CAS 889865-37-6)
- 1-Methyl-2-oxo-1,2-dihydropyridine-3-sulfonyl chloride (CAS 1785316-68-8)
- 1-Ethyl-3-(2-methylhydrazono)indolin-2-one (CAS 455300-56-8)
- Acodazole (CAS 55435-65-9)
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- 2-Bromo-5-(trifluoromethoxy)phenylacetic acid (CAS 887266-81-1)
- Tetracosactide Acetate (CAS 60189-34-6)
- 6-Methylpiperidine-3-carboxamide (CAS 89940-83-0)
- (10-31)Semaglutide (CAS CATO-C4X-2226283)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com