Ioversol impurity 31 CAS CATO-C4X-209131
| CAS No. | CATO-C4X-209131 |
| Molecular Formula | C18H24I3N3O9 |
| Molecular Weight | 807.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Ioversol impurity 31 (C18H24I3N3O9) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies Ioversol impurity 31 (CAS CATO-C4X-209131), a pharmacopoeial impurity reference standard (molecular formula C18H24I3N3O9, MW 807.11 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | C18H24I3N3O9 |
| Molecular Weight | 807.11 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | I-containing |
| Nitrogen Atoms | 3 |
Related Ioversol Standards
- Ioversol Impurity 5 (CAS 104517-96-6)
- Ioversol (CAS 87771-40-2)
- Ioversol Impurity 21 (CAS CATO-C4X-209121)
- Ioversol Impurity 14 (CAS CATO-C4X-209114)
- Ioversol Impurity 12 (CAS 70894-76-7)
- Ioversol Impurity 18 (CAS CATO-C4X-209118)
- Ioversol Impurity 19 (CAS CATO-C4X-209119)
- Ioversol Impurity 20 (CAS CATO-C4X-209120)
Recommended Standards
- N-(2-hydroxyethyl)-2,4,6-triiodo-3-(N-methylacetamido)-5-((2S,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanamido)benzamide (CAS 56562-79-9)
- 3-(N-(2-hydroxyethyl)acetamido)-2,4,6-triiodo-N-methyl-5-((2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanamido)benzamide (CAS 63941-73-1)
- 102042-09-1 21-Hydroxyoligomycin A Oligomycin A, 21-hydroxy- 21-Hydroxyl-oligomycin A (CAS 102042-09-1)
- Calcipotriol EP Impurity G (CAS CATO-C4X-12227)
- Naproxen Impurity 48 (CAS CATO-C4X-170848)
- Berberine Impurity 32 (CAS 33542-90-4(free base))
- Vortioxetine Impurity 168 (CAS 2384939-59-5)
- Parecoxib Impurity 60 (CAS CATO-C4X-159160)
- tert-butyl 2-amino-3-methylbenzoate (CAS 756500-12-6)
- 1-(2-(1H-imidazol-1-yl)phenyl)-3-(2,6-dimethylphenyl)urea (CAS 866042-18-4)
- 6'-Bromospiro[cyclobutane-1,3'-indolin]-2'-one (CAS 1190861-39-2)
- 1-(2-(Diethylamino)ethyl)-3-hydroxy-4-(4-isopropoxy-3-methylbenzoyl)-5-(p-tolyl)-1H-pyrrol-2(5H)-one (CAS 371125-84-7)
- Ethyltert-butylacetate (CAS 5340-78-3)
- Retatrutide (CAS 2381089-83-2)
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