Cilastatin Impurity 19 CAS CATO-C4X-196019
| CAS No. | CATO-C4X-196019 |
| Molecular Formula | C15H25NO4 |
| Molecular Weight | 283.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C15H25NO4, Cilastatin Impurity 19 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 283.36 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Cilastatin Impurity 19 (CAS CATO-C4X-196019) is a certified pharmaceutical impurity reference standard with the molecular formula C15H25NO4 and a molecular weight of 283.36 g/mol.
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 | C15H25NO4 |
| Molecular Weight | 283.36 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >90% |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Cilastatin Standards
- Cilastatin Impurity 15 (CAS 1114-50-7)
- Cilastatin Impurity 9 (CAS 131833-97-1)
- Cilastatin Impurity 29 (CAS 1022895-93-7)
- Cilastatin Impurity 47 (CAS 877758-94-6)
- Cilastatin EP Impurity E (CAS 1174657-07-8)
- Cilastatin Impurity 28 (CAS CATO-C4X-196028)
- Cilastatin EP Impurity H (CAS CATO-C4X-19605)
- Cilastatin Sodium - Impurity G (CAS 1174657-12-5)
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