Diphenyl Phosphite CAS 4712-55-4
| CAS No. | 4712-55-4 |
| Molecular Formula | C12H11O3P |
| Molecular Weight | 234.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Diphenyl Phosphite is closely related to a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Diphenyl Phosphite (CAS 4712-55-4) is a high-purity analytical reference standard with the molecular formula C12H11O3P and a molecular weight of 234.19 g/mol.
The molecular framework of Diphenyl Phosphite (C12H11O3P) is characterized by a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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 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).
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 Phosphite 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 | C12H11O3P |
| Molecular Weight | 234.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >75% |
| 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Diphenyl Standards
- 3,6-Diphenyl-1,2,4,5-tetrazine (CAS 6830-78-0)
- 5,6-Diphenyl-2,3-dihydropyrazine (CAS 1489-06-1)
- 1-Methyl-3,5-diphenyl-1H-pyrazole (CAS 19311-79-6)
- 3-Methyl-1,5-diphenyl-1H-pyrazole (CAS 3729-90-6)
- 4-Methyl-2,5-diphenyl-1H-imidazole (CAS 2654-31-1)
- 4-Methyl-3,5-diphenyl-4H-pyrazole (CAS 61355-12-2)
- 5-Methyl-1,3-diphenyl-1H-pyrazole (CAS 7188-89-8)
- 2,4-Diphenyl-1,3,5-triazine (CAS 1898-74-4)
Recommended Standards
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- 1-Methyluric Acid (CAS 708-79-2)
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- 2-Acetonitrilthiophene-5-carboxylic Acid ethyl ester (CAS 212508-31-1)
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- 2-Bromo-4,5-dimethyl-1H-imidazole (CAS 2302-38-7)
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- N-(5-Methyl-1,3,4-thiadiazol-2-yl)-1,2,3,6-tetrahydropyrimidine-4-carboxamide (CAS 356792-83-1)
- (R)-(-)-Camptothecin (CAS 110351-92-3)
- Liraglutide Impurity 20 TFA Salt (CAS CATO-C4X-199220)
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