(2-Methoxyethyl)triphenylphosphonium Bromide CAS 55894-16-1
| CAS No. | 55894-16-1 |
| Molecular Formula | C21H22OP |
| Molecular Weight | N/A |
| 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.
(2-Methoxyethyl)triphenylphosphonium Bromide (CAS 55894-16-1) is a high-purity analytical reference standard with the molecular formula C21H22OPBr and a molecular weight of 401.28 g/mol.
Structurally, (2-Methoxyethyl)triphenylphosphonium Bromide (C21H22OPBr) contains a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.5, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 401.28 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C21H22OP Br |
| Molecular Weight | 401.28 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 |
| Degree of Unsaturation (DBE) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Br-containing |
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Recommended Standards
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- (-)-Olivil (CAS 2955-23-9)
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- Tamsulosin EP Impurity F (CAS 6781-17-5)
- Des-Phe22-Tirzepatide (CAS CATO-CPTD788951)
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