EsCitalopram Impurity 3 CAS CATO-C4X-16343
| CAS No. | CATO-C4X-16343 |
| Molecular Formula | C20H19FN2O2 |
| Molecular Weight | 338.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including EsCitalopram Impurity 3.
CATO supplies EsCitalopram Impurity 3 (CAS CATO-C4X-16343), a pharmacopoeial impurity reference standard (molecular formula C20H19FN2O2, MW 338.38 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, EsCitalopram Impurity 3 (C20H19FN2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 338.38 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 EsCitalopram Impurity 3 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 | C20H19FN2O2 |
| Molecular Weight | 338.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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 EsCitalopram Standards
- ESCitalopram N-Oxide (CAS 917482-45-2)
- EsCitalopram EP Impurity H (CAS 63284-72-0)
- Escitalopram EP Impurity A(R-Isomer) (CAS CATO-C4X-110920)
- Escitalopram Impurity 2 (CAS 103146-25-4)
- Escitalopram EP Impurity M (CAS 1881237-26-8)
- Escitalopram EP Impurity K (CAS 128196-02-1)
- EsCitalopram EP Impurity I (CAS 1370643-22-3)
- Escitalopram EP Impurity G (R-Isomer) (CAS CATO-C4X-110989)
Recommended Standards
- Citalopram EP Impurity C (CAS 372941-54-3)
- Jatrorrhizine (CAS 3621-38-3)
- N-Acetyl-N-{5-[(Z)-(3-fluorophenyl)methylidene]-4-oxo-2-thioxo-1,3-thiazolan-3-yl}acetamide (CAS 866154-62-3)
- Columbamine (CAS 3621-36-1)
- Faropenem Impurity 15 Disodium salt (CAS 130535-75-0)
- Arotinolol Impurity 9 (CAS 4066-41-5)
- Roxadustat Impurity 163 (CAS 62202-62-4)
- Goserelin EP Impurity L Acetate (CAS 1926163-38-3（free base）)
- (3-Amino-4-(ethoxycarbonyl)phenyl)boronic acid (CAS 573675-99-7)
- 3-(Benzyloxy)-1-hydroxycyclobutane-1-carboxylic acid (CAS 2152918-76-6)
- Chiglitazar Sodium (CAS 1959588-75-0)
- 1-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)cyclopentane-1-carbonitrile (CAS 1396776-57-0)
- Isopropyl 4,6-dimethyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 333439-11-5)
- D-Thr7-Tirzepatide (CAS CATO-CPTD788924)
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