Cilnidipine impurity 23 CAS 118431-66-6
| CAS No. | 118431-66-6 |
| Molecular Formula | C14H15NO6 |
| Molecular Weight | 293.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Cilnidipine impurity 23.
As a process- or degradation-related impurity, Cilnidipine impurity 23 (CAS 118431-66-6, C14H15NO6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C14H15NO6, Cilnidipine impurity 23 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 293.27 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).
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 | C14H15NO6 |
| Molecular Weight | 293.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
Related Cilnidipine Standards
- (E)-Cilnidipine Impurity 14 (CAS CATO-C4X-179614)
- (E)-Cilnidipine Impurity 15 (CAS CATO-C4X-179615)
- Cilnidipine impurity 22 (CAS CATO-C4X-179622)
- Cilnidipine Impurity 28 (CAS 62760-08-1)
- Cilnidipine Impurity 11 (CAS 68077-28-1)
- (Z)-Cilnidipine Impurity 16 (CAS CATO-C4X-179616)
- Cilnidipine Impurity 29 (CAS 61363-91-5)
- (Z)-Cilnidipine Impurity 17 (CAS CATO-C4X-179617)
Recommended Standards
- Nitrendipine impurity 20 (CAS CATO-C4X-183420)
- Piribedil Impurity 21 (CAS 147262-41-7)
- Ac-muramic acid (CAS 10597-89-4)
- 2-Methoxyethyl 2-(3-Nitrobenzylidene)acetoacetate (CAS 39562-22-6)
- Trifarotene impurity 17 (CAS 182318-78-1)
- Eplerenone Impurity 21 (CAS CATO-C4X-163021)
- Lemborexant impurity 6 (CAS 3070371-41-1)
- 5-Hydroxybenzopyrrole (CAS 1953-54-4)
- 4-(4-(Benzyloxy)phenyl)butanoic acid (CAS 6686-26-6)
- Diphenyl-d5-methyl Alcohol (phenyl-d5) (CAS 95450-78-5)
- pyrazolo[1,5-a]quinolin-3-ol (CAS 2766427-68-1)
- N-(4-([1,2,4]Triazolo[4,3-b]pyridazin-6-yl)phenyl)-4-ethoxybenzamide (CAS 894066-77-4)
- 6-(Octadecyldisulfanyl)-9H-purine (CAS 122714-66-3)
- Semaglutide Impurity 176 (CAS CATO-C4X-2226176)
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