Citalopram impurity 81 CAS 62498-68-4
| CAS No. | 62498-68-4 |
| Molecular Formula | C19H19FN2O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C19H19FN2OC2H2O4, Citalopram impurity 81 contains a flavonoid 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 400.41 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).
Citalopram impurity 81 (CAS 62498-68-4) is a certified pharmaceutical impurity reference standard with the molecular formula C19H19FN2OC2H2O4 and a molecular weight of 400.41 g/mol.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Citalopram impurity 81 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 | C19H19FN2O C2H2O4 |
| Molecular Weight | 400.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Citalopram Standards
- Citalopram Impurity 38 (CAS 103146-26-5)
- Citalopram Impurity 17 (CAS 1187671-15-3)
- Citalopram EP Impurity D HBr (CAS 1188264-72-3)
- Citalopram-d6 N-Oxide (CAS 1189652-54-7)
- Citalopram-d6 (CAS 1190003-26-9)
- (R)-Citalopram-d6 N-Oxide (CAS 1217669-62-9)
- (S)-Citalopram-d6 N-Oxide (CAS 1217710-65-0)
- (S)-Citalopram-d6 Oxalate (CAS 1217733-09-9)
Recommended Standards
- Quetiapine impurity 82 (CAS CATO-C4X-124482)
- Cefradine EP Impurity C (CAS CATO-C4X-12157)
- Propranolol Impurity 15 (CAS CATO-C4X-151915)
- Mono(1-ethylpentyl) Phthalate (CAS 84489-38-3)
- Triamterene EP Impurity B (CAS 19375-89-4)
- 2-Chloro-3-(4-chloro-3-fluorophenyl)-1-propene (CAS 951888-20-3)
- Bis(acetylacetonate)diisopropyl titanate (CAS 17927-72-9)
- 5-(Aminomethyl)-2-iodophenol (CAS 943749-98-2)
- 8-Oxa-3-azabicyclo[3.2.1]octane (CAS 280-13-7)
- Semaglutide238 (CAS CATO-C4X-2226238)
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