4-Phosphonobenzoic Acid 1-Ethyl Ester CAS 75378-49-3
| CAS No. | 75378-49-3 |
| Molecular Formula | C9H11O5P |
| Molecular Weight | 230.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Phosphonobenzoic Acid 1-Ethyl Ester (CAS 75378-49-3), a certified reference material (molecular formula C9H11O5P, MW 230.15 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H11O5P, 4-Phosphonobenzoic Acid 1-Ethyl Ester contains a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 230.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 4-Phosphonobenzoic Acid 1-Ethyl Ester 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 | C9H11O5P |
| Molecular Weight | 230.15 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 methanol, ethanol, 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.) | 1978 |
Related Phosphonobenzoic Standards
Recommended Standards
- 3-(Dimethoxyphosphoryl)benzoic acid (CAS 26342-21-2)
- 5,6-Bis(trifluoromethyl)bicyclo[2,2,1]hept-2-ene (CAS 260559-44-2)
- 2-(Methoxy(phenoxy)phosphoryl)acetic acid (CAS 66448-24-6)
- 5-[3-(Trifluoromethoxy)phenyl]tetrazole (CAS 216144-09-1)
- 5,6,7,8-Tetrahydro-[1,3]dioxolo[4,5-g]isoquinoline (CAS 94143-83-6)
- 5-{[(4-Methylphenyl)sulfanyl]methyl}-2-furoic acid (CAS 915923-20-5)
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- 2-((5-(Benzylthio)-1,3,4-thiadiazol-2-yl)thio)-N-(3-(trifluoromethyl)phenyl)acetamide (CAS 477333-01-0)
- [6-(2-methoxyethoxy)naphthalen-2-yl]boronic acid (CAS 1332505-17-5)
- 3-(3-Chloro-4-(pentyloxy)phenyl)-5,6-dihydroimidazo[2,1-b]thiazole hydrochloride (CAS 160518-41-2)
- (R)-5-fluoro-6-methoxy-2,3-dihydro-1H-inden-1-amine (CAS 1213014-16-4)
- Semaglutide impurity 100 (CAS CATO-C4X-2226100)
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