Diethyl (4-(dimethylamino)phenyl)phosphonate CAS 1754-43-4
| CAS No. | 1754-43-4 |
| Molecular Formula | C12H20NO3P |
| Molecular Weight | 257.27 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.
Diethyl (4-(dimethylamino)phenyl)phosphonate (CAS 1754-43-4), molecular formula C12H20NO3P and molecular weight 257.27 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H20NO3P, Diethyl (4-(dimethylamino)phenyl)phosphonate contains an amide group, a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 257.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H20NO3P |
| Molecular Weight | 257.27 g/mol |
| Appearance | White to pale 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- n-(Azetidin-3-yl)-2-nitrobenzenesulfonamide (CAS 1605741-60-3)
- (4-Amino-3-(methoxymethoxy)phenyl)diethylphosphine oxide (CAS 2903922-91-6)
- Ethyl 2-amino-3-[(3,4,4-trifluoro-3-butenyl)sulfanyl]propanoate (CAS 1396965-16-4)
- (E)-2-((4-nitrobenzylidene)amino)thiophene-3-carbonitrile (CAS 343374-99-2)
- Zileuton (CAS 111406-87-2)
- Benzyl (3-methylpyrrolidin-3-yl)carbamate hydrochloride (CAS 1951441-24-9)
- 4-Acetyl-1,3-dimethyl-1H-pyrazol-5(4H)-one (CAS 74937-11-4)
- N2-Isobutyryl-2',3'-dideoxy-3'-tritylaminoguanidine-5'-O-N,N-diisopropylaminocyanoethylphosphoramidi (CAS 195375-66-7)
- (2-Chloro-4-ethoxyphenyl)methanol (CAS 1518882-29-5)
- Ruthenium, bis(acetato-κO,κO')[1,1'-[(1R)-6,6'-dimethoxy[1,1'-biphenyl]-2,2'-diyl]bis[1,1-di-2-furanylphosphine-κP]]-, (OC-6-22) (CAS 952040-51-6)
- 3-Nitro-5-(m-tolyloxy)aniline (CAS 352637-09-3)
- (E)-4-((4-ethoxybenzylidene)amino)-2-nitroaniline (CAS 315248-81-8)
- 1-(2-Amino-4,5-dimethylphenyl)pyrrolidin-2-one (CAS 69131-47-1)
- Peptide Impurity 64 (CAS CATO-CPTD788964)
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