2-(Diphenylphosphino)benzenesulfonic acid CAS 111864-25-6
| CAS No. | 111864-25-6 |
| Molecular Formula | C18H33O3PS |
| Molecular Weight | 360.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(Diphenylphosphino)benzenesulfonic acid (CAS 111864-25-6), molecular formula C18H33O3PS and molecular weight 360.49 g/mol, is a CATO reference standard with documented purity and traceability.
2-(Diphenylphosphino)benzenesulfonic acid (C18H33O3PS) contains a sulfone group, a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage. 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.
As a certified reference material (CRM), 2-(Diphenylphosphino)benzenesulfonic acid 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.
Physical & Chemical Properties
| Molecular Formula | C18H33O3PS |
| Molecular Weight | 360.49 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| 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.) | 1988 |
| Sulfur Atoms | 1 |
Related Diphenylphosphino Standards
- 2-(Diphenylphosphino)-N,N-diethylbenzamide (CAS 143024-49-1)
- 2-[2-(Diphenylphosphino)phenyl]-4,5-dihydro-4,4-dimethyloxazole (CAS 64691-33-4)
- 3-(Diphenylphosphino)-4-(methoxycarbonyl)benzoic Acid (CAS 361154-31-6)
- Sodium 4-(diphenylphosphino)benzenesulfonate (CAS 5952-62-5)
- 10-(Diphenylphosphino)decanoic acid (CAS 79849-58-4)
- 2-(Diphenylphosphino)-1-naphthoic acid (CAS 178176-80-2)
- 2′-(Diphenylphosphino)[1,1′-biphenyl]-2-ol (CAS 155566-51-1)
- 2-(Diphenylphosphino)-N-(1H-pyrrol-2-ylmethylene)benzenamine (CAS 649749-98-4)
Recommended Standards
- 3,3'-Disulfanediylbis(N-phenylpropanamide) (CAS 1047-89-8)
- 3,17β-O-Bis(methoxymethyl)estradiol (CAS 113680-55-0)
- Ilaprazole Impurity 63 (CAS CATO-C4X-113063)
- Maresin 1 (CAS 1268720-28-0)
- N-(2,6-diethylphenyl)-3-oxo-3-phenylpropanamide (CAS 40624-79-1)
- (E)-4-(3-(2-Methoxyphenyl)-3-oxoprop-1-en-1-yl)benzoic acid (CAS 2517583-84-3)
- N-Nitroso Ametryn (CAS 2731965-10-7)
- 13290-51-2 2,5-bis[(dimethylamino)methyl]cyclopentanone dihydrochloride R4343 (CAS 13290-51-2)
- 4-Amino-N-hydroxy-3-nitrobenzimidamide (CAS 1256486-31-3)
- 3-(5-(3-Bromophenyl)furan-2-yl)propanoic acid (CAS 1018663-26-7)
- Dabigatran Impurity 68 (CAS 103041-38-9)
- 3-Bromo-2,4-bis(difluoromethyl)pyridine (CAS 2091581-43-8)
- 3-Amino-N-(4-chlorophenyl)-6-methyl-5,6,7,8-tetrahydrothieno[2,3-b][1,6]naphthyridine-2-carboxamide (CAS 371222-56-9)
- Vialox Peptide(Pentapeptide-3) (CAS 135679-88-8)
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