Diethyl (difluoro(phenylselanyl)methyl)phosphonate CAS 327156-99-0
| CAS No. | 327156-99-0 |
| Molecular Formula | C11H15F2O3PSe |
| Molecular Weight | 343.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Diethyl (difluoro(phenylselanyl)methyl)phosphonate (C11H15F2O3PSe) contains a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.5, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 343.17 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Diethyl (difluoro(phenylselanyl)methyl)phosphonate (CAS 327156-99-0), molecular formula C11H15F2O3PSe and molecular weight 343.17 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C11H15F2O3PSe |
| Molecular Weight | 343.17 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
Related Diethyl Standards
- Diethyl 2-(((5-bromopyridin-2-yl)amino)methylene)malonate (CAS 16867-58-6)
- Diethyl ((4-bromophenyl)difluoromethyl)phosphonate (CAS 177284-56-9)
- Diethyl 1-(1,3-dimethyl-6-(methylamino)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)hydrazine-1,2-dicarboxylate (CAS 49810-14-2)
- Diethyl 1-(4-acetylphenyl)-2-methyl-1H-pyrrole-3,4-dicarboxylate (CAS 853334-51-7)
- 1,3-Diethyl 2-{[(3-methyl-1-phenyl-1H-pyrazol-5-yl)amino]methylidene}propanedioate (CAS 110299-41-7)
- diethyl 2-{[(2,3-dimethyl-6-quinoxalinyl)amino]methylene}malonate (CAS 170948-50-2)
- Diethyl 2-(1-(tert-butoxycarbonyl)piperidin-4-yl)malonate (CAS 1257294-02-2)
- Diethyl 2,6-dimethyl-4-(p-tolyl)-1,4-dihydropyridine-3,5-dicarboxylate (CAS 36422-59-0)
Recommended Standards
- 5-(4-Bromophenyl)-1-hydroxy-3-phenyl-1,2-dihydropyrazin-2-one (CAS 339011-12-0)
- Ethyl (4-bromo-3-cyano-7-fluorobenzo[b]thiophen-2-yl)carbamate (CAS 2649788-77-0)
- 4-(4-Bromobenzylidene)-1-phenylpyrazolidine-3,5-dione (CAS 77738-03-5)
- Ethyl (E)-4-(4-bromo-2-formyl-6-methoxyphenoxy)but-2-enoate (CAS 478064-33-4)
- 6-Chloro-4-pyrimidinyl 2-(3-piperidinyl)ethylether hydrochloride (CAS 1219967-23-3)
- methyl 2-(3-methylpiperidin-1-yl)-2-oxoacetate (CAS 1565404-20-7)
- 3,5-Dimethyl-1-(3,3,3-trifluoropropyl)-1h-pyrazol-4-amine (CAS 1344332-32-6)
- (S)-1-Isobutyl-2-methylpyrrolidine (CAS 503314-17-8)
- Ethyl (4-nitrophenyl) carbonate (CAS 6132-45-2)
- (2E,4E)-N,N-Diphenylhexa-2,4-dienamide (CAS 61859-44-7)
- 2,6-Dibromo-4-fluorobenzotrifluoride (CAS 1803837-12-8)
- 5,7-Dibromoquinolin-2(1H)-one (CAS 2028414-42-6)
- 2-((1-Cyanocyclopentyl)amino)-2-oxoethyl 3-bromo-4-methoxybenzoate (CAS 871304-95-9)
- D-Thr5-Tirzepatide (CAS CATO-CPTD788926)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com