Diethyl 4-formylbenzylphosphonate CAS 125185-25-3
| CAS No. | 125185-25-3 |
| Molecular Formula | C12H17O4P |
| Molecular Weight | 256.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Diethyl 4-formylbenzylphosphonate (CAS 125185-25-3), molecular formula C12H17O4P and molecular weight 256.23 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Diethyl 4-formylbenzylphosphonate (C12H17O4P) is characterized by a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C12H17O4P |
| Molecular Weight | 256.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
Related Diethyl Standards
- Diethyl 2-(5-fluoropyrimidin-4-yl)malonate (CAS 1333169-66-6)
- Diethyl (4-acetylphenyl)phosphonate (CAS 25944-71-2)
- Diethyl 2,5-dihydroxycyclohexa-1,4-diene-1,4-dicarboxylate (CAS 16877-79-5)
- Diethyl [(2,6-dimethylphenyl)methyl]phosphonate (CAS 902526-55-0)
- Diethyl[(3-Bromo-4-methylphenyl)methyl]amine (CAS 1414870-79-3)
- Diethyl 2-(2-oxocyclohexyl)malonate (CAS 4039-31-0)
- Diethyl 2-(3-oxocyclohexyl)malonate (CAS 22274-75-5)
- Diethyl 4,5-dimethylpyridazine-1,2(3H,6H)-dicarboxylate (CAS 7249-39-0)
Recommended Standards
- 6-Cyclopropyl-1-methyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-3-amine (CAS 1242267-97-5)
- 6-((Benzyloxy)carbonyl)picolinic acid (CAS 125686-90-0)
- 2-(4-fluorophenoxy)imidazo[1,2-a]pyridine-3-carbaldehyde (CAS 1156131-66-6)
- 5-Amino-5'-cyano-2'-fluoro-[1,1'-biphenyl]-3-carboxylic acid (CAS 1261966-35-1)
- 4'-(Methylsulfanyl)[1,1'-biphenyl]-4-carbonitrile (CAS 130373-85-2)
- 3-Chloro-N-(2-fluorobenzyl)propanamide (CAS 895367-68-7)
- 3-Ethyl-5-hydroxybenzenesulfonamide (CAS 1243407-66-0)
- Dicarboxylate of Chloramphenicol Side Chain Acid Polymer (CAS CATO-C4X-232137)
- 5-Fluoro-3-nitro-4'-(trifluoromethyl)-[1,1'-biphenyl]-2-amine (CAS 2007909-49-9)
- 3-[(1-benzofuran-2-yl)carbonyl]pyridine (CAS 17730-35-7)
- 9-Benzyl-1,4-dioxa-9-azadispiro[4.2.4.2]tetradecane hydroiodide (CAS 1630906-38-5)
- 1-(6-(4-Isopropylpiperazin-1-yl)-2-methylpyridin-3-yl)propan-1-ol (CAS 1355193-39-3)
- 2-(2-Hydroxypyridin-4-yl)acetic acid (CAS 860410-81-7)
- α Bag Cell Peptide (1-9) (CAS 87549-52-8)
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