Flunarizine Impurity 29 CAS 39199-93-4
| CAS No. | 39199-93-4 |
| Molecular Formula | C9H9Cl |
| Molecular Weight | 152.62 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Flunarizine Impurity 29 (CAS 39199-93-4, C9H9Cl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C9H9Cl, Flunarizine Impurity 29 contains chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 152.62 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 | C9H9Cl |
| Molecular Weight | 152.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl-containing |
Related Flunarizine Standards
- Flunarizine Impurity 19 (CAS 18903-04-3)
- Flunarizine impurity 47 (CAS 2602342-57-2)
- Flunarizine Impurity 27 (CAS 4510-34-3)
- Flunarizine impurity 45 (CAS 3141-41-1)
- Flunarizine impurity 47 (CAS 148728-47-6)
- Flunarizine Impurity 25 (CAS 365-22-0)
- Flunarizine Impurity 59 (CAS 114312-65-1)
- Flunarizine Impurity 9 (CAS 87179-40-6)
Recommended Standards
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- (S)-Hexahydropyrrolo[1,2-a]pyrazin-4(1H)-one hydrochloride (CAS 1303975-09-8)
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- Etofibrate (CAS 31637-97-5)
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