Iohexol impurity 36 CAS CATO-C4X-166436
| CAS No. | CATO-C4X-166436 |
| Molecular Formula | C18H24ClI2N3O9 |
| Molecular Weight | 715.66 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 715.66 g/mol gives Iohexol impurity 36 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Iohexol impurity 36 (CAS CATO-C4X-166436) is a certified pharmaceutical impurity reference standard with the molecular formula C18H24ClI2N3O9 and a molecular weight of 715.66 g/mol.
Structurally, Iohexol impurity 36 (C18H24ClI2N3O9) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine/iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 715.66 g/mol, it falls into the high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C18H24ClI2N3O9 |
| Molecular Weight | 715.66 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 | Cl/I-containing |
| Nitrogen Atoms | 3 |
Related Iohexol Standards
- Iohexol Impurity 31 (CAS 1096689-22-3)
- Iohexol EP Impurity J (CAS 76801-93-9)
- Iohexol impurity 40 (CAS CATO-C4X-166440)
- Iohexol Impurity 51 (CAS 1651211-78-7)
- Iohexol EP Impurity H (CAS CATO-CP120264)
- Iohexol Impurity 18 (CAS CATO-C4X-166418)
- Iohexol EP Impurity A (CAS 31127-80-7)
- Iohexol impurity 47 (CAS CATO-C4X-166447)
Recommended Standards
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- S-Adenosyl-L-Methionine Impurity 17 (CAS 2095880-61-6)
- Flupentixol Impurity 17 (CAS CATO-C4X-189517)
- Lacosamide Impurity 24 (CAS 2295925-91-4)
- Methyl 2-hydroxytetrahydrofuran-3-carboxylate (CAS 143726-37-8)
- 6-Methoxy-1H-pyrrolo[3,2-b]pyridin-3-amine (CAS 1190316-76-7)
- 1-(3-Chlorophenyl)-4-(4-chlorophenyl)-3-methyl-1H-pyrazol-5-amine (CAS 321385-92-6)
- 1,2,3,4-tetrahydroquinoline-5-carboxamide (CAS 1016734-68-1)
- 5-Chloro-2-(trifluoromethyl)pyridin-4-ol (CAS 1196157-49-9)
- D-Prolyl-L-proline (CAS 37784-16-0)
- Tau Peptide (275-305) (Repeat 2 Domain) trifluoroacetate salt (CAS 330456-25-2)
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