(3-(Methoxycarbonyl)benzyl)triphenylphosphonium bromide CAS 56981-97-6
| CAS No. | 56981-97-6 |
| Molecular Formula | C27H24O2P |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(3-(Methoxycarbonyl)benzyl)triphenylphosphonium bromide (C27H24O2PBr) contains a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
(3-(Methoxycarbonyl)benzyl)triphenylphosphonium bromide (CAS 56981-97-6), molecular formula C27H24O2PBr and molecular weight 491.36 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C27H24O2P Br |
| Molecular Weight | 491.36 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) | 15.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
Related Methoxycarbonyl Standards
- 5-(Methoxycarbonyl)pyridine-2-acetic Acid (CAS 1000524-56-0)
- 2-(5-(Methoxycarbonyl)-2-methylphenyl)acetic acid (CAS 1000566-21-1)
- (1-(Methoxycarbonyl)-1H-indol-2-yl)boronic acid (CAS 1001162-89-5)
- 2-[4-(methoxycarbonyl)-1h-pyrazol-1-yl]acetic acid (CAS 1006348-69-1)
- 2-[4-(methoxycarbonyl)-1h-pyrazol-1-yl]propanoic acid (CAS 1006494-90-1)
- (R)-2-((METHOXYCARBONYL)AMINO)BUTANOIC ACID (CAS 1007880-11-6)
- (S)-2-((Methoxycarbonyl)amino)pent-4-enoic acid (CAS 1007880-15-0)
- N-(METHOXYCARBONYL)-O-METHYL-L-SERINE (CAS 1007880-17-2)
Recommended Standards
- 3-(4-Chlorophenyl)-N-(4-methoxyphenyl)-4-oxo-3,4-dihydrophthalazine-1-carboxamide (CAS 320417-61-6)
- 3-(5-Bromothiophen-2-yl)-2-methylprop-2-enal (CAS 1563696-09-2)
- (1R,2S)-2-(1-isobutyl-1H-pyrazol-4-yl)cyclopropan-1-amine hydrochloride (CAS 1949805-94-0)
- 1-(2-Nitrophenyl)-1,2,4-triazole (CAS 25688-22-6)
- Efinaconazole Impurity 33 (CAS CATO-C4X-124333)
- [3,5-Bis(benzyloxy)benzyl]amine hydrochloride (CAS 1134702-15-0)
- (1R,3R,5S)-2-(tert-butoxycarbonyl)-1-methyl-2-azabicyclo[3.1.0]Hexane-3-carboxylic acid (CAS 2414675-26-4)
- [(1S)-1-[(Methoxymethylamino)carbonyl]butyl]carbamic Acid Benzyl Ester (CAS 207728-22-1)
- 2-((2,6-Dichlorobenzyl)thio)-5-((naphthalen-1-ylmethyl)thio)-1,3,4-thiadiazole (CAS 476484-10-3)
- Semaglutide impurity 43 (CAS CATO-C4X-222643)
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