5-Phosphonobenzene-1,3-dicarboxylic acid CAS 25062-54-8
| CAS No. | 25062-54-8 |
| Molecular Formula | C8H7O7P |
| Molecular Weight | 246.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Phosphonobenzene-1,3-dicarboxylic acid (CAS 25062-54-8), molecular formula C8H7O7P and molecular weight 246.11 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carbohydrate-derived structure, a phosphate ester group, 5-Phosphonobenzene-1,3-dicarboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 246.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO manufactures 5-Phosphonobenzene-1,3-dicarboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H7O7P |
| Molecular Weight | 246.11 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) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
Recommended Standards
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- 4-Bromo-5-ethyl-1-methyl-1H-pyrazole-3-carboxylic acid (CAS 1248387-82-7)
- 4-(1-Bromopropan-2-yl)-2-chloro-1-fluorobenzene (CAS 1506634-16-7)
- Benzyl (R)-4-bromo-3-((tert-butoxycarbonyl)amino)butanoate (CAS 1932491-99-0)
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Why CATO?
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