Flunarizine Impurity 7 CAS 87166-81-2
| CAS No. | 87166-81-2 |
| Molecular Formula | C26H26F2N2O |
| Molecular Weight | 420.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Flunarizine Impurity 7 (CAS 87166-81-2), a pharmacopoeial impurity reference standard (molecular formula C26H26F2N2O, MW 420.49 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C26H26F2N2O, Flunarizine Impurity 7 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 420.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 certified reference material (CRM), Flunarizine Impurity 7 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C26H26F2N2O |
| Molecular Weight | 420.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Flunarizine Standards
- Flunarizine Impurity N1 (CAS 123375-94-0)
- Flunarizine impurity 53 (CAS CATO-C4X-135753)
- Flunarizine impurity 34 (CAS CATO-C4X-135734)
- Flunarizine impurity 39 (CAS 19422-37-8)
- Flunarizine EP Impurity C (CAS 90830-31-2)
- Flunarizine Impurity 14 (CAS CATO-C4X-135714)
- Flunarizine Impurity 15 (CAS CATO-C4X-135715)
- Flunarizine EP Impurity D（(Z)-Flunarizine） (CAS 693765-11-6)
Recommended Standards
- ACrylate-peg6-t-butyl ester (CAS 1807537-32-1)
- 2,5-Bis((4-nitrobenzyl)thio)-1,3,4-thiadiazole (CAS 101291-96-7)
- 1-Benzyl-3-(benzyloxy)-N-(2-morpholinoethyl)-1H-pyrazole-4-carboxamide (CAS 1014068-46-2)
- 1-(Bis(4-Fluorophenyl)Methyl)-4-(3-(4'-Hydroxyphenyl)-2-Propenyl)Piperazine (CAS 100551-77-7)
- Difelikefalin Impurity 27 (CAS 123442-34-2)
- Trelagliptin Impurity 7 HCl (CAS 1812193-01-3（free base）)
- Orforglipron impurity 67 (CAS CATO-C4X-323467)
- Pravastatin EP Impurity C Sodium Salt (CAS 159225-12-4)
- N-Benzyl-1h-benzo[d][1,2,3]triazole-1-carbothioamide (CAS 690634-11-8)
- 6-tert-butyl-2,3,4,5,6,7-hexahydro-1,3-benzothiazol-2-one (CAS 1095051-70-9)
- N-(2-Fluorophenyl)-2-(4-(5-(furan-2-yl)-1,3,4-thiadiazol-2-yl)piperidin-1-yl)acetamide (CAS 1226456-53-6)
- (4S,5S)-Methyl 5-methyl-4,5-dihydrooxazole-4-carboxylate (CAS 118916-78-2)
- 4-(Benzyloxy)-6-methylpyridine-2-sulfonyl chloride (CAS 1393582-94-9)
- Neuroendocrine Regulatory Peptide-1 (human) (H-6622.1000) (CAS 954420-50-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com