Gadoxetate impurity 23 CAS 1618674-24-0
| CAS No. | 1618674-24-0 |
| Molecular Formula | C17H27NO6S |
| Molecular Weight | 373.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Gadoxetate impurity 23 (CAS 1618674-24-0), a pharmacopoeial impurity reference standard (molecular formula C17H27NO6S, MW 373.46 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Gadoxetate impurity 23 (C17H27NO6S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 373.46 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C17H27NO6S |
| Molecular Weight | 373.46 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Gadoxetate Standards
- Gadoxetate Impurity 2 (CAS CATO-C4X-26182)
- Gadoxetate Impurity 27 (CAS CATO-C4X-261827)
- Gadoxetate impurity 21 (CAS CATO-C4X-261821)
- Gadoxetate Impurity 26 (CAS CATO-C4X-261826)
- Gadoxetate Impurity 3 (CAS CATO-C4X-26183)
- Gadoxetate Impurity 13 (CAS CATO-C4X-261813)
- Gadoxetate Impurity 15 (CAS CATO-C4X-261815)
- Gadoxetate Impurity 14 (CAS 158599-72-5)
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