Flunarizine impurity 54 CAS 394202-45-2
| CAS No. | 394202-45-2 |
| Molecular Formula | C20H24N2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 328.88 g/mol gives Flunarizine impurity 54 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Flunarizine impurity 54 (CAS 394202-45-2) is a certified pharmaceutical impurity reference standard with the molecular formula C20H24N2HCl and a molecular weight of 328.88 g/mol.
Flunarizine impurity 54 (C20H24N2HCl) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C20H24N2 HCl |
| Molecular Weight | 328.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Flunarizine Standards
- Flunarizine impurity 43 (CAS 1133842-25-7)
- Flunarizine Impurity 59 (CAS 114312-65-1)
- Flunarizine impurity 57 (CAS 114374-24-2)
- Flunarizine Impurity N1 (CAS 123375-94-0)
- Flunarizine Impurity N1 HCl (CAS 123375-94-0(free base))
- Flunarizine impurity 46 (CAS 1368426-98-5(free base))
- Flunarizine Impurity 32 (CAS 141528-78-1)
- Flunarizine Impurity 26 (CAS 144917-53-3)
Recommended Standards
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- 1-Benzofuran-7-sulfonyl chloride (CAS 1191030-88-2)
- 3,5-Dichloro-3-(2,4-dimethylphenyl)propiophenone (CAS 898794-52-0)
- 4-Bromo-2-nitro-5-(trifluoromethyl)aniline (CAS 683241-86-3)
- 1-(5-BRomo-6-methoxypyridin-3-yl)ethan-1-one (CAS 1256837-15-6)
- (Des-Gly2)-Exenatide trifluoroacetate salt (CAS 1678416-78-8)
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