4-Oxo-2,6-diphenyl-4H-4lambda*5*-[1,4]oxaphosphinin-4-ol CAS 56153-45-8
| CAS No. | 56153-45-8 |
| Molecular Formula | C16H13O3P |
| Molecular Weight | 284.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, 4-Oxo-2,6-diphenyl-4H-4lambda*5*-[1,4]oxaphosphinin-4-ol is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 284.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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-Oxo-2,6-diphenyl-4H-4lambda*5*-[1,4]oxaphosphinin-4-ol (CAS 56153-45-8), molecular formula C16H13O3P and molecular weight 284.25 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 4-Oxo-2,6-diphenyl-4H-4lambda*5*-[1,4]oxaphosphinin-4-ol 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 | C16H13O3P |
| Molecular Weight | 284.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Oxo Standards
- Diphenyl(2,2,2-trifluoroethyl)phosphineoxide (CAS 57328-25-3)
- 3,3-Diphenyl-3H-indol-2-amine (CAS 61352-09-8)
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- 1,3-Diphenyl-1H-indazol-5-amine (CAS 857800-70-5)
- 3-Methyl-1,6-diphenyl-1H-pyrazolo[3,4-b]pyridine (CAS 198637-57-9)
- Diphenyl (chloromethyl)phosphonate (CAS 10419-85-9)
- 1-Methyl-5,5-diphenyl-2-thioxoimidazolidin-4-one (CAS 21083-49-8)
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Recommended Standards
- 4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid (CAS 6259-63-8)
- 5-Hydroxy-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid (CAS 21951-33-7)
- 1-(Benzyloxy)-2-fluoro-3-methyl-5-(trifluoromethyl)benzene (CAS 2586127-19-5)
- 5-Oxo-1-(4-sulfophenyl)-2,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 51307-71-2)
- 3-Methylquinoline-5-carboxylic acid (CAS 94975-86-7)
- (1-Methyl-1h-imidazol-2-yl)methanol hydrochloride (CAS 718642-27-4)
- (1-methyl-1H-indazol-5-yl)boronic acid (CAS 590418-08-9)
- 1-(1-Cyclopropyl-1H-pyrazol-4-yl)ethan-1-one (CAS 1784673-98-8)
- methyl (3aS,7aS)-5-methyl-octahydro-1H-pyrrolo[3,4-c]pyridine-7a-carboxylate (CAS 1807937-98-9)
- 2-(5-(Morpholinomethyl)-1H-tetrazol-1-yl)acetic acid hydrochloride (CAS 1443279-42-2)
- 6-CHloro-2-(2,4-dimethylphenyl)imidazo[1,2-a]pyridine (CAS 305864-87-3)
- 1-(5-(4-Chlorophenyl)-1H-pyrazol-4-yl)-3,4-dihydropyridin-2(1H)-one (CAS 321574-11-2)
- 1-(4-methoxyphenyl)-3-(1H-1,2,4-triazol-1-yl)propan-1-one (CAS 108664-74-0)
- Semaglutide impurity 56 (CAS CATO-C4X-222656)
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