Midazolam Impurity 29 CAS CATO-C4X-150929
| CAS No. | CATO-C4X-150929 |
| Molecular Formula | C20H16ClFN2OS2 |
| Molecular Weight | 418.94 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 Midazolam Impurity 29 (CAS CATO-C4X-150929), a pharmacopoeial impurity reference standard (molecular formula C20H16ClFN2OS2, MW 418.94 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C20H16ClFN2OS2, Midazolam Impurity 29 contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 418.94 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C20H16ClFN2OS2 |
| Molecular Weight | 418.94 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Midazolam Standards
- Midazolam Impurity 31 (CAS CATO-C4X-150931)
- Midazolam Impurity 14 (CAS 2531288-23-8)
- Midazolam Impurity 30 (CAS CATO-C4X-150930)
- Midazolam Impurity 42 (CAS CATO-C4X-150942)
- Midazolam EP Impurity C (CAS 59468-44-9)
- Midazolam Impurity 34 (CAS CATO-C4X-150934)
- Midazolam 2,5-Dioxide-d6 (CAS 1215321-98-4)
- Midazolam Hydrochloride (CAS 59467-96-8)
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Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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