Citalopram EP Impurity C CAS 372941-54-3
| CAS No. | 372941-54-3 |
| Molecular Formula | C20H19FN2O2 |
| Molecular Weight | 338.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Citalopram EP Impurity C 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.
Citalopram EP Impurity C (CAS 372941-54-3) is a certified pharmaceutical impurity reference standard with the molecular formula C20H19FN2O2 and a molecular weight of 338.38 g/mol.
Citalopram EP Impurity C (C20H19FN2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C20H19FN2O2 |
| Molecular Weight | 338.38 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 |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Citalopram Standards
- Citalopram Nitrile Oxide (CAS 1346601-93-1)
- Citalopram EP Impurity B (Escitalopram EP Impurity B ) (CAS 411221-53-9)
- (R)-Citalopram N-Oxide (CAS 1217761-31-3)
- Citalopram EP Impurity A (CAS 64372-56-1)
- Citalopram Impurity 11 (CAS CATO-C4X-110911)
- Citalopram Impurity 14 (CAS CATO-C4X-110914)
- Citalopram Impurity 15 (CAS 488787-59-3)
- Citalopram Impurity 68 (CAS 481047-48-7)
Recommended Standards
- N-Acetyl-N-{5-[(Z)-(3-fluorophenyl)methylidene]-4-oxo-2-thioxo-1,3-thiazolan-3-yl}acetamide (CAS 866154-62-3)
- EsCitalopram Impurity 3 (CAS CATO-C4X-16343)
- N-(3-Cyanophenyl)-2-((5,6-dimethylthieno[2,3-d]pyrimidin-4-yl)oxy)acetamide (CAS 764694-25-9)
- Jatrorrhizine (CAS 3621-38-3)
- Ibuprofen EP Impurity J (CAS 65813-55-0)
- Pomalidomide Impurity 22 (CAS 13139-52-1)
- Phytomenadione/Vitamin K1 Impurity 134 (CAS 76337-16-1)
- (4-iodo-3-methyl-pyraZol-1-yl)-acetonitrile (CAS 1354704-12-3)
- Holmiumphosphat,99.00% (CAS 14298-39-6)
- 3-oxa-9-azaspiro[5.5]undecane;hydrochloride (CAS 1380300-88-8)
- Calcium Malate (CAS 17482-42-7)
- (2R,4R)-pyrrolidine-2,4-dicarboxylic acid (CAS 130830-78-3)
- 2-bromo-4,5-dimethoxy-N-methylbenzenesulfonamide (CAS 923126-56-1)
- Peptide 441 (CAS CATO-CPTD788441)
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