2,5-Diphosphonoterephthalic acid CAS 223519-93-5
| CAS No. | 223519-93-5 |
| Molecular Formula | C8H8O10P2 |
| Molecular Weight | 326.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,5-Diphosphonoterephthalic acid.
2,5-Diphosphonoterephthalic acid (CAS 223519-93-5) is a high-purity analytical reference standard with the molecular formula C8H8O10P2 and a molecular weight of 326.09 g/mol.
2,5-Diphosphonoterephthalic acid (C8H8O10P2) contains a carbohydrate-derived structure, a phosphate ester group. 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).
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.
CATO manufactures 2,5-Diphosphonoterephthalic 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 | C8H8O10P2 |
| Molecular Weight | 326.09 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
Recommended Standards
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- n-Isobutyl-4-methoxypentan-1-amine (CAS 1250620-36-0)
- 6-Carbamoyl-5-cyclopropoxypicolinic acid (CAS 1243469-57-9)
- 2-Isopropoxy-6-methylbenzoic acid (CAS 1369861-28-8)
- Methyl 1-[2-(2,4-dichlorophenyl)-2-oxoethyl]-2-oxo-1,2-dihydropyridine-3-carboxylate (CAS 339024-59-8)
- Pimonidazole (CAS 70132-50-2)
- 2-((6-Bromonaphthalen-2-yl)oxy)-N-(2-cyano-3-methylbutan-2-yl)acetamide (CAS 875857-09-3)
- Ethyl 2-(2-methoxy-4-methylphenoxy)acetate (CAS 667399-57-7)
- (4-Methyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl)methanol (CAS 921938-81-0)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
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