(((2S,3S,4R)-3-hydroxy-4-(2-hydroxyphenoxy)tetrahydro-2H-pyran-2-yl)methyl)diphenylphosphine oxide CAS 291273-51-3
| CAS No. | 291273-51-3 |
| Molecular Formula | C24H25O5P |
| Molecular Weight | 424.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
(((2S,3S,4R)-3-hydroxy-4-(2-hydroxyphenoxy)tetrahydro-2H-pyran-2-yl)methyl)diphenylphosphine oxide (CAS 291273-51-3), molecular formula C24H25O5P and molecular weight 424.43 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (((2S,3S,4R)-3-hydroxy-4-(2-hydroxyphenoxy)tetrahydro-2H-pyran-2-yl)methyl)diphenylphosphine oxide (C24H25O5P) contains a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.5, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 424.43 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).
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.
Physical & Chemical Properties
| Molecular Formula | C24H25O5P |
| Molecular Weight | 424.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Recommended Standards
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- 2-Ethoxyquinoline-4-carboxylic acid (CAS 5467-62-9)
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- Betamethasone impurity 49 (CAS CATO-C4X-143749)
- (3Z)-1H-Indole-2,3-dione 3-[(2-hydroxyethyl)-hydrazone] (CAS 1142214-49-0)
- Semaglutide impurity 67 (CAS CATO-C4X-222667)
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