Chloro[tris(4-chlorophenyl)phosphine]gold CAS 65295-04-7
| CAS No. | 65295-04-7 |
| Molecular Formula | C18H12AuCl4P |
| Molecular Weight | 598.04 g/mol |
| 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.
Chloro[tris(4-chlorophenyl)phosphine]gold (CAS 65295-04-7), molecular formula C18H12AuCl4P and molecular weight 598.04 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to organophosphorus functionality, chlorine substitution, a polycyclic aromatic system, Chloro[tris(4-chlorophenyl)phosphine]gold is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 598.04 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C18H12AuCl4P |
| Molecular Weight | 598.04 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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- 3-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)phenyl 1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-1H-pyrrole-2-sulfonate (CAS 338406-93-2)
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Recommended Standards
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- 3-(3-(((Dimethylamino)methylene)amino)-2,4,6-triiodophenyl)propanoic acid (CAS 5587-89-3)
- 1-(3-bromophenyl)-4-chloro-1H-pyrazolo[3,4-d]pyrimidine (CAS 650628-17-4)
- 4-(4-Chlorophenylthio)-5,8-difluorochroman-3-ol (CAS 944944-61-0)
- N1-(5-Chloro-2-methoxyphenyl)-N2-(2-cyclopropyl-2-hydroxypropyl)oxalamide (CAS 1286720-24-8)
- 2-(4-Bromothiophen-2-yl)piperidine hydrochloride (CAS 1177327-68-2)
- 4-(4-Amino-6-mercapto-1,2-dihydro-1,3,5-triazin-2-yl)-2-chlorophenol (CAS 1142201-11-3)
- Ethyl 2-amino-4-(4-methyl-1h-pyrazol-1-yl)butanoate (CAS 1343033-59-9)
- N-Nitroso N-Desmethyl Rifampicin (CAS CATO-C4X-145615)
- 2-(3-Chloroprop-1-yn-1-yl)thiophene (CAS 944882-53-5)
- 2-Methyl-1-(4,5,6,7-tetrahydro-1H-benzo[d]imidazol-2-yl)propan-1-amine dihydrochloride (CAS 1820651-15-7)
- Semaglutide impurity 108 (CAS CATO-C4X-2226108)
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