Escitalopram EP Impurity M CAS 1881237-26-8
| CAS No. | 1881237-26-8 |
| Molecular Formula | C20H22FNO3 |
| Molecular Weight | 343.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Escitalopram EP Impurity M is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Escitalopram EP Impurity M (CAS 1881237-26-8) is a certified pharmaceutical impurity reference standard with the molecular formula C20H22FNO3 and a molecular weight of 343.39 g/mol.
Structurally, Escitalopram EP Impurity M (C20H22FNO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 343.39 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 Escitalopram EP Impurity M 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 | C20H22FNO3 |
| Molecular Weight | 343.39 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Escitalopram Standards
- Escitalopram EP Impurity A(R-Isomer) (CAS CATO-C4X-110920)
- Escitalopram Impurity 2 (CAS 103146-25-4)
- ESCitalopram N-Oxide (CAS 917482-45-2)
- EsCitalopram EP Impurity H (CAS 63284-72-0)
- EsCitalopram Impurity 3 (CAS CATO-C4X-16343)
- 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 M (CAS 440121-09-5)
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- 2-Ethyl-1-ethynyl-4-methoxybenzene (CAS 62929-98-0)
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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