Ioversol Impurity 20 CAS CATO-C4X-209120
| CAS No. | CATO-C4X-209120 |
| Molecular Formula | C18H24I3N3O8 |
| Molecular Weight | 791.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ioversol Impurity 20 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Ioversol Impurity 20 (CAS CATO-C4X-209120), a pharmacopoeial impurity reference standard (molecular formula C18H24I3N3O8, MW 791.11 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution, Ioversol Impurity 20 is typically off-white to pale yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 791.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), Ioversol 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 | C18H24I3N3O8 |
| Molecular Weight | 791.11 g/mol |
| Purity | >95% |
| 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 12 (CAS 70894-76-7)
- Ioversol Impurity 18 (CAS CATO-C4X-209118)
- Ioversol Impurity 19 (CAS CATO-C4X-209119)
- Ioversol impurity 28 (CAS CATO-C4X-209128)
- Ioversol impurity 29 (CAS CATO-C4X-209129)
- Ioversol impurity 31 (CAS CATO-C4X-209131)
- Ioversol Impurity 5 (CAS 104517-96-6)
- Ioversol (CAS 87771-40-2)
Recommended Standards
- 1,2-Distearoyl-rac-glycero-3-phosphocholine 2,3-bis(stearoyloxy)propyl 2-(trimethylammonio)ethyl phosphate 816-93-3 (CAS 816-93-3)
- (2R,3R,4R,5R)-2-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-5-(6-chloro-9H-purin-9-yl)-4-fluorotetrahydrofuran-3-yl (2-cyanoethyl) diisopropylphosphoramidite (CAS 2803878-95-5)
- (11bS)-2,6-diiodo-N,N-bis((R)-1-phenylethyl)dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-amine (CAS 1642865-17-5)
- Iopromide Impurity 23 (CAS CATO-C4X-183223)
- Flurbiprofen Impurity 93 (CAS CATO-C4X-144493)
- Carbocisteine Impurity 4(Mixture of diastereomers) (CAS 5439-87-2)
- Cefpodoxime Impurity 65 (CAS CATO-C4X-157965)
- N-(2-((2,2-dimethyl-2,3-dihydrobenzofuran-7-yl)oxy)ethyl)acetamide (CAS 1206094-93-0)
- 948294-53-9 7-Bromo-2-chloro-3-(2-chloroethyl)quinoline DTXSID90588948 (CAS 948294-53-9)
- Trelagliptin Impurity 36 (CAS CATO-C4X-104636)
- 2-(2,2-Difluoro-2h-1,3-benzodioxol-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1628572-83-7)
- 2-(2,4-Dichlorobenzyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1800284-57-4)
- 3-(Aminomethyl)-N-benzyl-N-methyloxetan-3-amine (CAS 1784793-90-3)
- Tirzepatide Impurity 26 X TFA Salt (CAS CATO-C4X-324026)
Why CATO?
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