Iodixanol impurity 20 CAS 111453-49-7
| CAS No. | 111453-49-7 |
| Molecular Formula | C13H13I3N2O6 |
| Molecular Weight | 673.97 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Iodixanol impurity 20 (CAS 111453-49-7), a pharmacopoeial impurity reference standard (molecular formula C13H13I3N2O6, MW 673.97 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C13H13I3N2O6, Iodixanol impurity 20 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 673.97 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Iodixanol impurity 20 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C13H13I3N2O6 |
| Molecular Weight | 673.97 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 |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
Related Iodixanol Standards
- Iodixanol Impurity 19 (CAS 134768-69-7)
- Iodixanol Impurity 5 (CAS CATO-C4X-16635)
- Iodixanol Impurity 21 (CAS CATO-C4X-166321)
- Iodixanol Impurity 18 (CAS CATO-C4X-166318)
- Iodixanol Impurity 15 (CAS CATO-C4X-166315)
- Iodixanol Impurity 14 (CAS 103254-70-2)
- Iodixanol Impurity 17 (CAS 77203-11-3)
- Iodixanol Impurity 16 (CAS CATO-C4X-166316)
Recommended Standards
- N-(9-((6aR,8R,9R,9aR)-2,2,4,4-tetraisopropyl-9-((methylthio)methoxy)tetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-8-yl)-9H-purin-6-yl)benzamide (CAS 139434-69-8)
- 2-(piperidin-2-yl)-1H-indole (CAS 20862-83-3)
- bis(2-(Di(adamantan-1-yl)phosphino)ethyl)amine (CAS 1086138-36-4)
- 1-Iodo-1H,1H,2H,2H-perfluorododecane (CAS 2043-54-1)
- Agomelatine Impurity 45 (CAS 166527-00-0)
- Phytomenadione/Vitamin K1 Impurity 129 (CAS 1181-23-3（无手性）)
- Felbinac Trometamol Impurity 5 (CAS CATO-C4X-33685)
- Geranyl acetate (CAS 16409-44-2)
- (R)-3-((tert-Butoxycarbonyl)amino)hexanoic acid (CAS 158807-49-9)
- 4-Amino-N-(3-(dimethylamino)propyl)-1-methyl-1H-pyrazole-5-carboxamide (CAS 1468862-19-2)
- n-(4-(Sec-butylamino)phenyl)acetamide (CAS 317321-35-0)
- 4-Chloro-6-(difluoromethyl)-3-methoxypyridine-2-sulfonamide (CAS 1805385-35-6)
- Pentacyclo[4.2.0.02,5.03,8.04,7]octane-1-methanamine hydrochloride (CAS 187275-39-4)
- Neuropeptide Y (human, rat) trifluoroacetate salt (CAS 90880-35-6)
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