(5-Ethoxy-5-oxopentyl)triphenylphosphonium bromide CAS 118026-77-0
| CAS No. | 118026-77-0 |
| Molecular Formula | C25H28O2P |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(5-Ethoxy-5-oxopentyl)triphenylphosphonium bromide (CAS 118026-77-0) is a high-purity analytical reference standard with the molecular formula C25H28O2PBr and a molecular weight of 471.38 g/mol.
Owing to a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage, bromine substitution, (5-Ethoxy-5-oxopentyl)triphenylphosphonium bromide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 471.38 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C25H28O2P Br |
| Molecular Weight | 471.38 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, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
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Recommended Standards
- 4,5-Dibromo-2-methyl-2H-1,2,3-triazole (CAS 28938-17-2)
- 1-(Bromomethyl)-3-fluoro-2-methoxybenzene (CAS 916420-50-3)
- (6-Chloropyridazin-3-yl)boronic acid (CAS 1448866-11-2)
- 3-((5-Bromopyridin-2-yl)oxy)benzaldehyde (CAS 1427460-53-4)
- 3-(3-chloropropyl)-1H-pyrazole (CAS 174790-34-2)
- 4-[(1-Azetidinyl)methyl]phenylboronic acid (CAS 2246662-21-3)
- 2,4-Dichloro-N-(4-((2-chlorophenyl)thio)phenyl)benzamide (CAS 339105-24-7)
- Fumonisin B1 (CAS 116355-83-0)
- 2,4-Di(aziridin-1-yl)-6-chloropyrimidine (CAS 2482-80-6)
- Biotinyl-Glucagon (1-29) (human, rat, porcine) trifluoroacetate salt (CAS 1802086-28-7)
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