Ioversol Impurity 18 CAS CATO-C4X-209118
| CAS No. | CATO-C4X-209118 |
| Molecular Formula | C18H24I3N3O8 |
| Molecular Weight | 791.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Ioversol Impurity 18 (CAS CATO-C4X-209118), a pharmacopoeial impurity reference standard (molecular formula C18H24I3N3O8, MW 791.11 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Ioversol Impurity 18 (C18H24I3N3O8) 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. 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).
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.
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 19 (CAS CATO-C4X-209119)
- Ioversol Impurity 20 (CAS CATO-C4X-209120)
- 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
- Iopromide Impurity 23 (CAS CATO-C4X-183223)
- Iopromide (CAS 73334-07-3)
- 1,2-Distearoyl-rac-glycero-3-phosphocholine 2,3-bis(stearoyloxy)propyl 2-(trimethylammonio)ethyl phosphate 816-93-3 (CAS 816-93-3)
- Iopamidol Impurity 50 (CAS CATO-C4X-145050)
- Glycine Glycocholic Acid Impurity 41 (CAS CATO-C4X-116041)
- Butylphthalide Impurity 25 (CAS 3453-63-2)
- Lacosamide Impurity 31 (CAS 1629130-53-5)
- 2-Methyl-1-(1-methyl-1H-1,2,4-triazol-5-yl)propan-1-amine (CAS 1015846-29-3)
- 2,3,8-Trimethylquinolin-4(1H)-one (CAS 1203-47-0)
- (E)-[(5-{[(4-tert-butylphenyl)methyl]sulfanyl}-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methylidene]amino benzoate (CAS 318238-30-1)
- 1-Benzyl-4-(4-piperidinyl)piperazinedihydrochloride (CAS 868707-62-4)
- 3-Chloro-1-cyclopropylisoquinoline (CAS 1446192-32-0)
- (4-fluoro-3-(trifluoromethyl)phenyl)hydrazine (CAS 105224-02-0)
- Mast Cell Degranulating Peptide (CAS 83856-13-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com