Diphenyl-o-tolyl phosphate CAS 5254-12-6
| CAS No. | 5254-12-6 |
| Molecular Formula | C19H17O4P |
| Molecular Weight | 340.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Diphenyl-o-tolyl phosphate (C19H17O4P) contains a flavonoid core, a phosphate ester 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.
CATO supplies Diphenyl-o-tolyl phosphate (CAS 5254-12-6), a certified reference material (molecular formula C19H17O4P, MW 340.31 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Diphenyl-o-tolyl phosphate 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 | C19H17O4P |
| Molecular Weight | 340.31 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) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Diphenyl Standards
- Diphenyl (hydroxy(phenyl)methyl)phosphonate (CAS 52364-32-6)
- Diphenyl-m-tolyl phosphate (CAS 69500-28-3)
- Diphenyl-p-tolyl phosphate (CAS 78-31-9)
- Benzyl Diphenyl Phosphate (CAS 4218-62-6)
- Diphenyl((phenylsulfinyl)methyl)phosphine oxide (CAS 87762-75-2)
- N-(4,5-Diphenyl-1H-1,2,3-triazol-1-yl)benzamide (CAS 61588-68-9)
- 3-Methyl-1,6-diphenyl-1,4,5,6-tetrahydro-pyrazolo[4,3-f]pyrrolo[1,2-a][1,4]diazepine (CAS 1243023-65-5)
- 1-(4-(3,5-Diphenyl-4,5-dihydro-1H-pyrazol-1-yl)phenyl)ethanone (CAS 90447-34-0)
Recommended Standards
- 1,2-DIbromo-2-chloro-1,1,4,4,4-pentafluorobutane (CAS 885276-01-7)
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- N-(2-(piperidin-2-yl)ethyl)-3,5-bis(trifluoromethyl)aniline (CAS 195371-86-9)
- 1-(4-(4-Fluorophenyl)-6-(trifluoromethyl)pyrimidin-2-yl)piperidin-4-amine (CAS 1018143-48-0)
- 1-{pyrrolo[2,1-f][1,2,4]triazin-7-yl}ethan-1-one (CAS 1545012-48-3)
- 1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)ethanone (CAS 1071454-96-0)
- N4-phenylpyridine-2,4-diamine phosphate (CAS 1184185-05-4)
- 4-(4-Chlorobenzamido)benzoic acid (CAS 70204-56-7)
- Ru(bpy)2(dcbpy)NHS dihexafluorophosphate (CAS 160525-49-5)
- Dibutyl (difluoromethane)phosphonate (CAS 681-83-4)
- 1-(2,4-Dimethylphenyl)-3-(3,4-dimethylphenyl)propan-1-one (CAS 898779-35-6)
- 4-Chloro-2-iodopyridin-3-amine (CAS 1805269-67-3)
- 2-Bromo-1-(2-bromo-5-fluorophenyl)ethan-1-one (CAS 1427446-94-3)
- Glucagon Monohydrochloride (CAS 28270-04-4)
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