(9H-Fluoren-9-ylidene)triphenylphosphorane CAS 4756-25-6
| CAS No. | 4756-25-6 |
| Molecular Formula | C31H23P |
| Molecular Weight | 426.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (9H-Fluoren-9-ylidene)triphenylphosphorane meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
(9H-Fluoren-9-ylidene)triphenylphosphorane (CAS 4756-25-6) is a high-purity analytical reference standard with the molecular formula C31H23P and a molecular weight of 426.49 g/mol.
Structurally, (9H-Fluoren-9-ylidene)triphenylphosphorane (C31H23P) contains organophosphorus functionality, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 20.5, corresponding to approximately 20 ring(s) or double-bond equivalent(s). With a molecular weight of 426.49 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C31H23P |
| Molecular Weight | 426.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 20.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related H Standards
- (9H-fluoren-9-yl)methyl tert-butyl (4-hydroxybutane-1,3-diyl)(S)-dicarbamate (CAS 915714-21-5)
- 9H-Fluoren-9-ylmethyl N-[(1S)-2-(tert-butoxy)-1-[methoxy(methyl)carbamoyl]ethyl]carbamate (CAS 439685-19-5)
- 2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-((tert-butoxycarbonyl)amino)propanoic acid (CAS 130851-23-9)
- 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(1H-indol-7-yl)propanoic acid (CAS 1379862-92-6)
- (((9H-Fluoren-9-yl)methoxy)carbonyl)tryptophan (CAS 144701-22-4)
- 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(1H-indol-4-yl)propanoic acid (CAS 1464091-37-9)
- 3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-((tert-butoxycarbonyl)amino)propanoic acid (CAS 159002-16-1)
- 14-(9H-Fluoren-9-yl)-4,12-dioxo-8,13-dioxa-5,11-diazatetradecanoic acid (CAS 669073-62-5)
Recommended Standards
- (2E)-3-[1-(Benzenesulfonyl)-1H-indol-5-yl]-N-(oxan-2-yloxy)prop-2-enamide (CAS 951655-99-5)
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- (2S,5R,6R)-3,3-Dimethyl-7-oxo-6-(2-phenoxy-2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (CAS 1926-48-3)
- (E)-4-(4-nitrostyryl)-6-phenoxy-2,3-dihydrothieno[3,2-c]quinoline (CAS 866133-75-7)
- 10-Oxo Buprenorphine (CAS 1044710-08-8)
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- 4-Dimethylaminoazobenzene-4’-carboxylic Acid (CAS 6268-49-1)
- 3,8-Diamino-5-methyl-6-phenylphenanthridin-5-ium bromide hydrate (CAS 37889-60-4)
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