4-(Diphenylphosphino)benzenesulfonic acid CAS 60421-69-4
| CAS No. | 60421-69-4 |
| Molecular Formula | C18H15O3PS |
| Molecular Weight | 342.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 4-(Diphenylphosphino)benzenesulfonic acid (C18H15O3PS) contains a steroid core, a sulfone group, a phosphonate group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.5, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 342.35 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).
4-(Diphenylphosphino)benzenesulfonic acid (CAS 60421-69-4), molecular formula C18H15O3PS and molecular weight 342.35 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-(Diphenylphosphino)benzenesulfonic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H15O3PS |
| Molecular Weight | 342.35 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Sulfur Atoms | 1 |
Related Diphenylphosphino Standards
- 3-(Diphenylphosphino)benzenesulfonic acid (CAS 16704-71-5)
- 1-Diphenylphosphino-2-(N,N-dimethylamino)-1H-indene (CAS 628323-64-8)
- 6-(Diphenylphosphino)-2,2'-bipyridine (CAS 152194-39-3)
- (1R)-1-(2-(Diphenylphosphino)cyclohexyl)-N,N-dimethylethanamine (CAS 1027065-42-4)
- 2-(Diphenylphosphino)biphenyl (CAS 13885-09-1)
- (S)-4-((Diphenylphosphino)methyl)-2-(pyridin-2-yl)-4,5-dihydrooxazole (CAS 679788-24-0)
- 2-(Diphenylphosphino)terephthalic acid (CAS 1537175-69-1)
- 3-(Diphenylphosphino)-2-(methoxymethoxy)benzaldehyde (CAS 185019-68-5)
Recommended Standards
- 4-(Benzo[d][1,3]dioxol-5-yl)-2-methyl-5-oxo-4,5-dihydro-1H-indeno[1,2-b]pyridine-3-carbonitrile (CAS 691870-02-7)
- 4,4'-(Diazene-1,2-diyl)dibenzenesulfonic acid (CAS 2779-21-7)
- 4-(2-(2-([1,1'-Biphenyl]-2-yloxy)acetyl)hydrazinyl)-4-oxobutanoic acid (CAS 650611-46-4)
- 4,4-Dimethyl-5'-phenyl-hexahydrospiro[cyclohexane-1,3'-pyrrolo[3,4-d][1,2]oxazole]-2,4',6,6'-tetrone (CAS 339011-75-5)
- 2-Chloro-3,5,6-trifluorobenzoic acid (CAS 1805475-26-6)
- Bromomethyl isobutyrate (CAS 74416-82-3)
- 4-((tert-Butyldimethylsilyl)oxy)butan-2-ol (CAS 104925-50-0)
- 1-(4-Hydroxyphenyl)dodecan-1-one (CAS 2589-74-4)
- 1-Pyrimidin-2-ylazetidin-3-amine (CAS 1343948-38-8)
- [S(R)]-N-[(S)-[2-(Diphenylphosphino)-4,5-dimethoxyphenyl]-1-naphthalenylmethyl]-2-methyl-2-propanesulfinamide (CAS 2417456-74-5)
- (6S,8aS)-octahydroindolizin-6-amine (CAS 132256-88-3)
- 2-[(Piperidin-4-yl)methoxy]-4-(trifluoromethyl)pyridine dihydrochloride (CAS 2097937-49-8)
- 2-(tert-Butoxy)-3-(tert-butyl)phenol (CAS 1243360-59-9)
- Hexapeptide-11 (CAS 161258-30-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com