Diethyl (2-methylbenzyl)phosphonate CAS 62778-16-9
| CAS No. | 62778-16-9 |
| Molecular Formula | C12H19O3P |
| Molecular Weight | 242.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Diethyl (2-methylbenzyl)phosphonate is closely related to a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Diethyl (2-methylbenzyl)phosphonate (CAS 62778-16-9), molecular formula C12H19O3P and molecular weight 242.25 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Diethyl (2-methylbenzyl)phosphonate (C12H19O3P) contains a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage. 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 242.25 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C12H19O3P |
| Molecular Weight | 242.25 g/mol |
| 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1974 |
Related Diethyl Standards
- Diethyl (1-Phenylethyl)phosphonate (CAS 33973-48-7)
- Diethyl (2,4-dimethylphenyl)phosphonate (CAS 58983-20-3)
- Diethyl (2,6-dimethylphenyl)phosphonate (CAS 54057-96-4)
- diethyl (3,5-dimethylphenyl)phosphonate (CAS 79238-62-3)
- Diethyl (4-ethylphenyl)phosphonate (CAS 72596-29-3)
- Diethyl 3-Methylbenzylphosphonate (CAS 63909-50-2)
- Diethyl 4-methylbenzylphosphonate (CAS 3762-25-2)
- Diethyl 4,5-dioxocyclopentane-1,3-dicarboxylate (CAS 10088-87-6)
Recommended Standards
- Allyldiphenylphosphine oxide (CAS 4141-48-4)
- 7-Methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-sulfonamide (CAS 864544-84-3)
- Ethyl 2-((3-carbamoylthiophen-2-yl)amino)-2-oxoacetate (CAS 68746-57-6)
- 6-Ethoxy-1H-benzo[d]imidazole-2-sulfonic acid (CAS 301163-44-0)
- 3-(4-Methoxyphenyl)-1-(4-(trifluoromethyl)phenyl)propan-1-one (CAS 898776-07-3)
- 2-(3-Chloropropyl)-1,4-difluorobenzene (CAS 1057673-28-5)
- 7,7-Dioxido-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-yl 4-fluorobenzoate (CAS 343373-66-0)
- (2S,4S)-4-Hydroxypyrrolidine-2-carboxamide hydrochloride (CAS 851233-67-5)
- 1-(3,4,5-trimethoxyphenyl)propan-1-one (CAS 5658-50-4)
- 2-Methoxy-4-(methylsulfonyl)pyridine (CAS 1268520-81-5)
- 1-(3,4-Dimethoxyphenyl)prop-2-en-1-amine (CAS 1270510-31-0)
- 1H-Pyrrolo[2,3-c]pyridine-3,4-dicarboxylic acid (CAS 1190320-34-3)
- 6-(2-Methylbutan-2-yl)spiro[2.5]octane-1-carboxylic acid (CAS 1271659-84-7)
- Tirzepatide Impurity 24 X TFA Salt (CAS CATO-C4X-324024)
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