Diquafosol Impurity 28 CAS CATO-C4X-214928
| CAS No. | CATO-C4X-214928 |
| Molecular Formula | C18H22N4O29P6 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO supplies Diquafosol Impurity 28 (CAS CATO-C4X-214928), a pharmacopoeial impurity reference standard (molecular formula C18H22N4O29P6Na, MW 967.21 g/mol) used for the identification and quantification of trace impurities in APIs.
Diquafosol Impurity 28 (C18H22N4O29P6Na) contains a flavonoid core, an amide group, a phosphate ester 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).
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 | C18H22N4O29P6 6*Na |
| Molecular Weight | 967.21 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Diquafosol Standards
- Diquafosol Impurity 15 (CAS 10003-94-8)
- Diquafosol Impurity 10 Trisodium Salt Dihydrate (CAS 116295-90-0)
- Diquafosol Impurity 2 (CAS 1402828-42-5)
- Diquafosol Impurity 7 (CAS 14264-46-1)
- Diquafosol Impurity 14 (CAS 1603-79-8)
- Diquafosol Impurity 9 (CAS 19817-91-5)
- Diquafosol Impurity 12 (CAS 19817-92-6)
- Diquafosol Impurity 19 (CAS 2050-92-2)
Recommended Standards
- Lorazepam EP Impurity D (CAS 54699-91-1)
- Upadacitinib Impurity 53 (CAS 1046861-47-5)
- Lansoprazole Impurity 53 (CAS CATO-C4X-111353)
- 2-Methyl-3-oxo-3,4-dihydro-2H-pyrazino[2,3-b][1,4]oxazine-6-carbonitrile (CAS 1956369-39-3)
- 2-(4-Nitrophenoxy)-N-propylacetamide (CAS 701248-94-4)
- Ritonavir EP Impurity B（HCl） (CAS 165315-97-9)
- (2-Oxo-azepan-1-yl)-acetic acid (CAS 35048-56-7)
- 5-Chloro-3-[2-(trifluoromethyl)phenyl]-1,2,4-thiadiazole (CAS 1338218-73-7)
- 2-Amino-2-(3-(trifluoromethyl)bicyclo[1.1.1]Pentan-1-yl)acetic acid (CAS 1822452-46-9)
- D-Thr5-Tirzepatide (CAS CATO-CPTD788926)
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