Flunarizine impurity 39 CAS 19422-37-8
| CAS No. | 19422-37-8 |
| Molecular Formula | C26H18F4 |
| Molecular Weight | 406.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Flunarizine impurity 39 (CAS 19422-37-8), a pharmacopoeial impurity reference standard (molecular formula C26H18F4, MW 406.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Flunarizine impurity 39 (C26H18F4) contains fluorine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 406.41 g/mol, it falls into the moderately-high-molecular-weight range. 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.
CATO manufactures Flunarizine impurity 39 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C26H18F4 |
| Molecular Weight | 406.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | F-containing |
Related Flunarizine Standards
- Flunarizine EP Impurity C (CAS 90830-31-2)
- Flunarizine EP Impurity D（(Z)-Flunarizine） (CAS 693765-11-6)
- Flunarizine (CAS 52468-60-7)
- Flunarizine impurity 34 (CAS CATO-C4X-135734)
- Flunarizine Impurity 6 (CAS 768360-45-8)
- Flunarizine Impurity 7 (CAS 87166-81-2)
- Flunarizine Impurity N1 (CAS 123375-94-0)
- Flunarizine impurity 53 (CAS CATO-C4X-135753)
Recommended Standards
- 2-(acetoxymethyl)-6-thioureidotetrahydro-2H-pyran-3,4,5-triyl triacetate (CAS CATO-C3D-262984)
- Iguratimod Impurity 20 (CAS 544482-14-6)
- N-(4-Fluoro-2-methylphenyl)-2-(2-(4-methoxyphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl)acetamide (CAS 941938-29-0)
- Iguratimod Impurity 71 (CAS CATO-C4X-182671)
- Baloxavir Marboxil Impurity 220 (CAS 4883-87-8)
- Pregabalin Impurity 145 (CAS CATO-C4X-1312145)
- Econazole impurity 22 (CAS 787501-56-8)
- 5-hydroxypyrimidin-4(1H)-one (CAS 15837-41-9)
- 3-Amino-1-methyl-1H-pyrrole-2-carbonitrile (CAS 1823939-14-5)
- 8-Amino-2-methyl-2-azaspiro[4.5]decan-3-one (CAS 1824126-86-4)
- (r)-n-((s)-2-Methoxy-5,7-dihydrospiro[cyclopenta[b]pyridine-6,4'-piperidin]-5-yl)-2-methylpropane-2-sulfinamide (CAS 2377355-74-1)
- Methyl 2-[4-(trifluoromethoxy)phenyl]benzoate (CAS 1528793-38-5)
- 7-Mercapto-2,3-dihydro-1H-inden-1-one (CAS 1053660-68-6)
- Neuropeptide W-23 (rat) (CAS 383415-89-2)
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