Etomidate Impurity 16 CAS CATO-C4X-188416
| CAS No. | CATO-C4X-188416 |
| Molecular Formula | C16H23NO4 |
| Molecular Weight | 293.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Etomidate Impurity 16 (C16H23NO4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 293.36 g/mol, it falls into the medium-molecular-weight range. 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).
CATO supplies Etomidate Impurity 16 (CAS CATO-C4X-188416), a pharmacopoeial impurity reference standard (molecular formula C16H23NO4, MW 293.36 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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 | C16H23NO4 |
| Molecular Weight | 293.36 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Etomidate Standards
- Etomidate Impurity 43 (CAS CATO-C4X-188443)
- Etomidate impurity 55 (CAS CATO-C4X-188455)
- Etomidate Impurity 50 (CAS 2626887-15-6)
- Etomidate impurity 53 (CAS CATO-C4X-188453)
- Etomidate Impurity 23 (CAS 112421-33-7)
- Etomidate Impurity 5 (CAS 84711-26-2)
- Etomidate Impurity 30 (CAS CATO-C4X-188430)
- Etomidate Impurity 42 (CAS CATO-C4X-188442)
Recommended Standards
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- Revefenacin impurity 112 (CAS CATO-C4X-2031112)
- Melphalan Impurity 35 (CAS CATO-C4X-198835)
- Doxazosin EP Impurity G (CAS 60547-97-9)
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- 2-((2-(4-Bromophenyl)-2-oxoethyl)thio)-4,6-diphenylnicotinonitrile (CAS 297162-21-1)
- 3,5-Dibromo-2-hydroxy-4,6-dimethylbenzaldehyde (CAS 861521-89-3)
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- 3,5-Bis((4-chlorobenzyl)thio)-1,2,4-thiadiazole (CAS 330551-83-2)
- Des-Ile17-Tirzepatide (CAS CATO-CPTD788956)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com