(2-Ethoxyphenyl)phosphonic acid CAS 111192-83-7
| CAS No. | 111192-83-7 |
| Molecular Formula | C8H11O4P |
| Molecular Weight | 202.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(2-Ethoxyphenyl)phosphonic acid (C8H11O4P) contains a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
(2-Ethoxyphenyl)phosphonic acid (CAS 111192-83-7) is a high-purity analytical reference standard with the molecular formula C8H11O4P and a molecular weight of 202.14 g/mol.
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.
As a certified reference material (CRM), (2-Ethoxyphenyl)phosphonic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H11O4P |
| Molecular Weight | 202.14 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 |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1988 |
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Recommended Standards
- 36750-88-6 3,3,3-Trifluoro-1-phenylpropane-1,2-dione hydrate MFCD00209621 (CAS 36750-88-6)
- 6-(Trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridin-3-amine (CAS 1180519-29-2)
- CAS 2244703-19-1 (CAS 2244703-19-1)
- 6-(Trifluoromethyl)-1H-pyrazolo[4,3-b]pyridin-3-amine (CAS 1211536-39-8)
- 2-(1-(2-pHenylhydrazono)ethyl)aniline (CAS 40754-13-0)
- Ethyl 3-aminotetrahydrofuran-3-carboxylate (CAS 1343113-71-2)
- 2-Butyramidothiophene-3-carboxamide (CAS 896680-70-9)
- Methyl 2-azaspiro[4.4]Nonane-4-carboxylate (CAS 1598075-54-7)
- (OC-6-12)-[1,1'-Bis(diphenylphosphino-κP)ferrocene]dichloro(1,2-ethanediamine-κN1,κN2)ruthenium (CAS 853412-10-9)
- 2-(4,4-Dimethyl-6-nitro-2-oxo-3,4-dihydroquinolin-1(2H)-yl)acetic acid (CAS 1355231-38-7)
- 7-Bromochroman-4-ol (CAS 18385-82-5)
- 4-(5-Bromopyridin-3-yl)pyrrolidin-2-one (CAS 1367022-58-9)
- Methyl 4-Bromo-2,3-difluorobenzoate (CAS 1807244-07-0)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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