Flunarizine impurity 52 CAS CATO-C4X-135752
| CAS No. | CATO-C4X-135752 |
| Molecular Formula | C43H44F4N4 |
| Molecular Weight | 692.83 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 692.83 g/mol gives Flunarizine impurity 52 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Flunarizine impurity 52 (CAS CATO-C4X-135752), a pharmacopoeial impurity reference standard (molecular formula C43H44F4N4, MW 692.83 g/mol) used for the identification and quantification of trace impurities in APIs.
Flunarizine impurity 52 (C43H44F4N4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C43H44F4N4 |
| Molecular Weight | 692.83 g/mol |
| Purity | 97%+ |
| 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) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Flunarizine Standards
- Flunarizine impurity 51 (CAS CATO-C4X-135751)
- Flunarizine Impurity 58 (CAS CATO-C4X-135758)
- Flunarizine Impurity 14 (CAS CATO-C4X-135714)
- Flunarizine Impurity 15 (CAS CATO-C4X-135715)
- Flunarizine impurity 53 (CAS CATO-C4X-135753)
- Flunarizine Impurity 7 (CAS 87166-81-2)
- Flunarizine Impurity N1 (CAS 123375-94-0)
- Flunarizine impurity 34 (CAS CATO-C4X-135734)
Recommended Standards
- m-PEG15-alcohol (CAS 2258654-78-1)
- 4,4'-((1E,1'E)-[1,1'-Biphenyl]-4,4'-diylbis(ethene-2,1-diyl))bis(N,N-diphenylaniline) (CAS 523977-57-3)
- Fusidic Acid Acyl β-D-Glucuronide (CAS 13013-66-6)
- Paliperidone Impurity 34 (CAS 1172995-13-9)
- Carvedilol impurity 7 (CAS 1246819-01-1)
- Methyl aminolevulinate Impurity 11 (CAS CATO-C4X-299311)
- Ensifentrine Impurity 22 (CAS 298680-39-4)
- N-Benzyl-4-bromo-N-methylpyridin-2-amine (CAS 1289132-66-6)
- 4,6-Di(1H-imidazol-1-yl)isophthalic acid (CAS 2374700-80-6)
- 2-(4-(1-(Quinolin-6-ylmethyl)-1H-[1,2,3]triazolo[4,5-b]pyrazin-6-yl)-1H-pyrazol-1-yl)ethanol hydrochloride (CAS 1159490-81-9)
- Crisaborole Impurity 25 (CAS CATO-C4X-202125)
- (2,4-Dichlorophenyl)glycine (CAS 13370-65-5)
- 2-Chloro-4,5-difluorobenzyl chloride (CAS 1378511-58-0)
- Semaglutide impurity 24 (CAS CATO-C4X-222624)
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