(4-Hydroxyphenyl)diphenylphosphine (p-Hydroxyphenyl)diphenylphosphine 4-(Diphenylphosphino)phenol 5068-21-3 CAS 5068-21-3
| CAS No. | 5068-21-3 |
| Molecular Formula | C18H33OP |
| Molecular Weight | 296.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4-Hydroxyphenyl)diphenylphosphine (p-Hydroxyphenyl)diphenylphosphine 4-(Diphenylphosphino)phenol 5068-21-3 (CAS 5068-21-3), molecular formula C18H33OP and molecular weight 296.43 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (4-Hydroxyphenyl)diphenylphosphine (p-Hydroxyphenyl)diphenylphosphine 4-(Diphenylphosphino)phenol 5068-21-3 (C18H33OP) is characterized by 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C18H33OP |
| Molecular Weight | 296.43 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.5 |
| CAS Registry Year (est.) | 1958 |
Related Hydroxyphenyl Standards
- (2-Hydroxyphenyl)diphenylphosphine 60254-10-6 (2-DIPHENYLPHOSPHINO)PHENOL;(2-HYDROXYPHENYL)DIPHENYLPHOSPHINE;(O-DIPHENYLPHOSPHINO)PHENOL;(O-HYDROXYPHENOL)DIPHENYLPHOSPHINE SC11177 (CAS 60254-10-6)
- 1-(4-Hydroxyphenyl)propan-1-one [1-(4-hydroxyphenyl)propylidene]hydrazone (CAS 1321752-63-9)
- N-(2-hydroxyphenyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide (CAS 591213-28-4)
- N-(3-hydroxyphenyl)-5-oxo-1-phenylpyrrolidine-3-carboxamide (CAS 352330-53-1)
- 3-(3-Hydroxyphenyl)-3-(1-oxoisoindolin-2-yl)propanoic acid (CAS 477848-97-8)
- 3-(4-Hydroxyphenyl)-2-(1-oxoisoindolin-2-yl)propanoic acid (CAS 477858-45-0)
- 3-(4-Hydroxyphenyl)-3-(1-oxoisoindolin-2-yl)propanoic acid (CAS 478249-83-1)
- Ethyl 2-((2-hydroxyphenyl)amino)benzofuran-3-carboxylate (CAS 82131-02-0)
Recommended Standards
- Thieno[3,2-f:4,5-f]bis[1]benzothiophene (CAS 74902-84-4)
- N-benzyl-6-sec-butyl-1,3-benzothiazol-2-amine (CAS 744227-06-3)
- Methyl-Pentachlorophenyl Sulfide (CAS 1825-19-0)
- N,N-Dimethyl-2-((2-phenyl-1H-indol-3-yl)thio)ethanamine (CAS 62663-12-1)
- Trimethoxy[(1,2,3,4,5-η)-1,2,3,4,5-pentamethyl-2,4-cyclopentadien-1-yl]titanium (CAS 123927-75-3)
- (4-(2-Chloropyrimidin-4-yl)thiophen-2-yl)boronic acid (CAS 2225175-37-9)
- Ethyl L-leucylglycinate (CAS 2087-47-0)
- 5-(4-Iodophenyl)pyrrolidin-2-one (CAS 1314775-79-5)
- 1-Ethynyl-4-hexylbenzene (CAS 79887-11-9)
- 3-Methoxy-5-methyl-1,2-benzenediol (CAS 1125-67-3)
- Dimethylamine (CAS 124-40-3)
- Ethyl 4-amino-7-bromoquinoline-3-carboxylate (CAS 1253420-35-7)
- 3-Bromo-5,6,7,8-tetrahydroimidazo[1,5-a]pyrazine (CAS 944900-87-2)
- Glu17-Semaglutide (CAS CATO-C4X-2226209)
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