Tribenzyl phosphite CAS 15205-57-9
| CAS No. | 15205-57-9 |
| Molecular Formula | C21H21O3P |
| Molecular Weight | 352.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Tribenzyl phosphite is closely related to a steroid core, a phosphonate group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Tribenzyl phosphite (CAS 15205-57-9), molecular formula C21H21O3P and molecular weight 352.36 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H21O3P, Tribenzyl phosphite contains a steroid core, a phosphonate group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 352.36 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Tribenzyl 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 | C21H21O3P |
| Molecular Weight | 352.36 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.) | 1961 |
Related Tribenzyl Standards
- 2,4,6-Tribenzyl-1,3,5-trioxane (CAS 77550-10-8)
- Tribenzyl(cyclohexyl)silane (CAS 18848-69-6)
- 1,4,7-Tribenzyl-1,4,7-triazacyclononane (CAS 125262-43-3)
- Tribenzyl 2-hydroxypropane-1,2,3-tricarboxylate (CAS 631-25-4)
- Tribenzyl(3-phenoxyphenyl)silane (CAS 18790-70-0)
- Tribenzyl(4'-bromo-[1,1'-biphenyl]-4-yl)silane (CAS 18763-42-3)
- Tribenzyl(4-(methyl(phenyl)(p-tolyl)silyl)phenyl)silane (CAS 18846-54-3)
Recommended Standards
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- (4-Fluorophenyl)(2-(phenoxymethyl)-6,7-dihydrooxazolo[5,4-c]pyridin-5(4H)-yl)methanone (CAS 1363281-27-9)
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- 5-Hydrazinyl-4-methyl-3-phenylisoxazole (CAS 25388-07-2)
- n-(4-Chlorophenyl)-2-(propylamino)acetamide (CAS 1021230-54-5)
- 3-(4-Chlorophenyl)-4-methylfuran-2,5-dione (CAS 72041-50-0)
- n-(3-(Methylsulfonamido)phenyl)cyclopropanecarboxamide (CAS 1090539-32-4)
- H-D-β-HoAla-OH·HCl (CAS 58610-42-7)
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