Citalopram Impurity 59 CAS CATO-C4X-110959
| CAS No. | CATO-C4X-110959 |
| Molecular Formula | C18H17FN2O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C18H17FN2OC2H2O4, Citalopram Impurity 59 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 386.38 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).
As a process- or degradation-related impurity, Citalopram Impurity 59 (CAS CATO-C4X-110959, C18H17FN2OC2H2O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
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 | C18H17FN2O C2H2O4 |
| Molecular Weight | 386.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°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 |
| 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
- Vortioxetine Impurity 151 (CAS CATO-C4X-1056151)
- Tizanidine impurity 25 (CAS CATO-C4X-144525)
- Mesna Impurity 7 (CAS CATO-C4X-16927)
- 7-O-Methyleriodictyol (CAS 51857-11-5)
- [(4S,5S)-2,2-Dimethyl-5-(methylsulfonyloxymethyl)-1,3-dioxolan-4-yl]methyl methanesulfonate (CAS 4248-74-2)
- 6-(Aminomethyl)isoquinolin-1-amine dihydrochloride (CAS 639860-72-3)
- 6-Ethoxy-N4-(2-fluoroethyl)pyrimidine-4,5-diamine (CAS 326831-57-6)
- 2-[3-(1,2,4-Triazol-1-yl)phenyl]-1,3-dioxolane (CAS 1141669-93-3)
- Heptanal (CAS 111-71-7)
- Glucagon receptor antagonists-2 (CAS 202917-18-8)
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