Iohexol Impurity G (2,4-diiodo Isomer) CAS CATO-C4X-166422
| CAS No. | CATO-C4X-166422 |
| Molecular Formula | C16H21I2N3O7 |
| Molecular Weight | 621.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Iohexol Impurity G (2,4-diiodo Isomer) 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.
Iohexol Impurity G (2,4-diiodo Isomer) (CAS CATO-C4X-166422) is a certified pharmaceutical impurity reference standard with the molecular formula C16H21I2N3O7 and a molecular weight of 621.16 g/mol.
The molecular framework of Iohexol Impurity G (2,4-diiodo Isomer) (C16H21I2N3O7) 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 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.
Physical & Chemical Properties
| Molecular Formula | C16H21I2N3O7 |
| Molecular Weight | 621.16 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 Iohexol Standards
- Iohexol Impurity 32 (CAS CATO-C4X-166432)
- Iohexol Impurity 33 (CAS CATO-C4X-166433)
- Iohexol Impurity 52 (CAS CATO-C4X-166452)
- Iohexol EP Impurity L (CAS 37441-29-5)
- Iohexol EP Impurity I (CAS 196309-19-0)
- Iohexol EP Impurity M (CAS CATO-C4X-166421)
- Iohexol EP Impurity H (4,6-diiodo Isomer) (Mixture of Diastereomers) (CAS 1651211-79-8)
- Iohexol EP Impurity F (CAS 1215856-35-1)
Recommended Standards
- (E)-2-(5-Chloro-2-(tritylamino)thiazol-4-yl)-11,11-dimethyl-9-oxo-4,10-dioxa-3,8-diazadodec-2-enoic acid (CAS 511523-12-9)
- Hexakis(2,2-difluoroethoxy)phosphazene (CAS 186817-57-2)
- Arachidyl behenate (CAS 42233-14-7)
- Tris[N,N-bis(trimethylsilyl)amide]cerium(III) (CAS 41836-21-9)
- Sitafloxacin Impurity 43 (CAS 127199-16-0)
- Ketoprofen EP Impurity D (CAS 107257-20-5)
- Azacitidine Impurity 28 (CAS 3530-56-1)
- 5-Chloro-6-methylpyrazine-2-carbonitrile (CAS 1260672-01-2)
- 6-Nitro-[1,2,4]triazolo[4,3-a]pyridine (CAS 502486-45-5)
- 2,2,2-Trifluoro-N-(3-methoxyphenyl)acetamide (CAS 14818-55-4)
- 2-Bromo-N-(2-cyclohex-1-en-1-ylethyl)propanamide (CAS 1119453-10-9)
- 2-(4-Fluorophenyl)-3,8-dioxo-7-(4-(trifluoromethyl)phenyl)-2,3,7,8-tetrahydropyrido[3,4-c]pyridazine-4-carbonitrile (CAS 400736-63-2)
- Heneicosanoic Acid-Ethyl Ester (CAS 28898-67-1)
- Fragment-[9-31]-Semaglutide (CAS CATO-C4X-2226181)
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