4-Hydroxy-1-phenylphosphinane 1-oxide CAS 23855-90-5
| CAS No. | 23855-90-5 |
| Molecular Formula | C11H15O2P |
| Molecular Weight | 210.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 4-Hydroxy-1-phenylphosphinane 1-oxide (C11H15O2P) contains organophosphorus functionality, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.5, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 210.21 g/mol, it falls into the medium-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).
CATO supplies 4-Hydroxy-1-phenylphosphinane 1-oxide (CAS 23855-90-5), a certified reference material (molecular formula C11H15O2P, MW 210.21 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.
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.
Physical & Chemical Properties
| Molecular Formula | C11H15O2P |
| Molecular Weight | 210.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
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Recommended Standards
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- N-benzyl-2-(2-phenyl-1H-benzo[d]imidazol-1-yl)-2-(piperidin-4-yl)acetamide (CAS 1440753-53-6)
- (R)-5-(1-amino-3-hydroxypropyl)-2-methoxyphenol (CAS 1212821-13-0)
- N-(2,3-dichlorophenyl)-4-phenyl-1,2,3-thiadiazole-5-carboxamide (CAS 477857-85-5)
- 1-(But-2-en-2-yl)-1H-benzo[d]imidazol-2(3H)-one (CAS 178042-32-5)
- 2-Methyl-3-pentenoic Acid (CAS 37674-63-8)
- (E)-1-phenyl-1H-1,2,3-triazole-4-carbaldehyde O-(4-chlorobenzyl) oxime (CAS 338757-48-5)
- Peptide 440 (CAS CATO-CPTD788440)
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