Ondansetron Impurity 11 CAS CATO-C4X-139411
| CAS No. | CATO-C4X-139411 |
| Molecular Formula | C18H21N3O3 |
| Molecular Weight | 327.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ondansetron Impurity 11 (CAS CATO-C4X-139411), a pharmacopoeial impurity reference standard (molecular formula C18H21N3O3, MW 327.38 g/mol) used for the identification and quantification of trace impurities in APIs.
Ondansetron Impurity 11 (C18H21N3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
As a certified reference material (CRM), Ondansetron Impurity 11 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H21N3O3 |
| Molecular Weight | 327.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Ondansetron Standards
- Ondansetron Impurity 16 (CAS CATO-C4X-139416)
- Ondansetron Impurity N47 (CAS 110708-17-3)
- Ondansetron Impurity 23 (CAS CATO-C4X-139423)
- Ondansetron Impurity 24 (CAS CATO-C4X-139424)
- Ondansetron-d5 (CAS 1219798-86-3)
- Ondansetron-13C-d3 (CAS CATO-C4X-139419)
- Ondansetron-d3 (CAS 1132757-82-4)
- R(+)-Ondansetron (CAS 99614-60-5)
Recommended Standards
- Rosuvastatin Impurity 240 (CAS CATO-C4X-1169240)
- Granisetron Impurity 19 (CAS CATO-C4X-197019)
- Sorafenib Impurity 13 (CAS CATO-C4X-112413)
- Granisetron Impurity 21 (CAS CATO-C4X-197021)
- Montelukast Impurity 29 (CAS 184764-13-4)
- Mesilate Impurity 13 (CAS CATO-C4X-224713)
- Regadenoson Impurity 6 (CAS 313348-16-2)
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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