7-(Triphenylphosphoranylidene)heptanoic acid CAS 52956-94-2
| CAS No. | 52956-94-2 |
| Molecular Formula | C25H27O2P |
| Molecular Weight | 390.45 g/mol |
| 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.
7-(Triphenylphosphoranylidene)heptanoic acid (CAS 52956-94-2) is a high-purity analytical reference standard with the molecular formula C25H27O2P and a molecular weight of 390.45 g/mol.
The molecular framework of 7-(Triphenylphosphoranylidene)heptanoic acid (C25H27O2P) is characterized by a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C25H27O2P |
| Molecular Weight | 390.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
Related Triphenylphosphoranylidene Standards
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- 2-((Triphenylphosphoranylidene)amino)benzaldehyde (CAS 53170-68-6)
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Recommended Standards
- 5-(4-Methoxyphenyl)-1-phenyl-4-(phenylsulfonyl)-1H-pyrazole (CAS 318951-69-8)
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- 4-Methoxy-N-(2-oxo-2-(2-phenylmorpholino)ethyl)benzenesulfonamide (CAS 954038-85-8)
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- Pigment Red 23 (CAS 6471-49-4)
- 4-(Aminomethyl)pyridine-2,6-diol (CAS 1393547-15-3)
- 4',4''',4''''',4'''''''-Methanetetrayltetrakis(([1,1'-biphenyl]-4-carboxylic acid)) (CAS 1208241-38-6)
- (S)-3-(Decanoyloxy)-4-(trimethylammonio)butanoate (CAS 25518-51-8)
- 2-{[4-(4-bromophenyl)-5-(phenoxymethyl)-4h-1,2,4-triazol-3-yl]sulfanyl}acetic acid (CAS 893725-81-0)
- 1-(2,3,4-Trifluorophenyl)ethanamine (CAS 780027-85-2)
- 1-Chloro-3-cyclohexylbenzene (CAS 27163-66-2)
- 3-Chloro-2-iodo-5,6-dimethoxypyridine (CAS 910616-72-7)
- Insulin B (22-25) (CAS 34367-73-2)
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