Diquafosol Impurity N9 CAS 42155-08-8
| CAS No. | 42155-08-8 |
| Molecular Formula | C9H11N2O8P |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Diquafosol Impurity N9 (CAS 42155-08-8, C9H11N2O8PNa) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Diquafosol Impurity N9 (C9H11N2O8PNa) contains a carbohydrate-derived structure, an amide group, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C9H11N2O8P 2*Na |
| Molecular Weight | 329.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Nitrogen Atoms | 2 |
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
- Betamethasone Impurity 43 (CAS 4735-65-3)
- Cinacalcet Impurity 26 (CAS 1201-74-7)
- Progesterone Impurity 64 (CAS 66875-13-6)
- 4-Amino-4’-hydroxybenzophenone (CAS 14963-34-9)
- N-Boc-N-methyl-2-(4-piperidyl)ethanamine (CAS 171049-32-4)
- 3-Azetidinyl 2,3-dihydro-1H-inden-5-yl ether hydrochloride (CAS 1449117-71-8)
- 3-(4-methylpiperazin-1-yl)propanal (CAS 1124345-71-6)
- Methyl 7-fluoro-3-methyl-1H-indole-2-carboxylate (CAS 1255147-47-7)
- Everolimus Impurity 49 (CAS CATO-C4X-112249)
- Neuropeptide Y (1-24) amide (human, rat) (CAS 131448-51-6)
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