Ondansetron EP Impurity A CAS 119812-29-2
| CAS No. | 119812-29-2 |
| Molecular Formula | C16H20N2O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ondansetron EP Impurity A 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.
CATO supplies Ondansetron EP Impurity A (CAS 119812-29-2), a pharmacopoeial impurity reference standard (molecular formula C16H20N2OHCl, MW 292.81 g/mol) used for the identification and quantification of trace impurities in APIs.
Ondansetron EP Impurity A (C16H20N2OHCl) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C16H20N2O HCl |
| Molecular Weight | 292.81 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Ondansetron Standards
- Ondansetron Hydrochloride Dihydrate (CAS 103639-04-9)
- Ondansetron EP Impurity B (CAS 1076198-52-1)
- Ondansetron Impurity N47 (CAS 110708-17-3)
- Ondansetron-d3 (CAS 1132757-82-4)
- Ondansetron Impurity 13 (CAS 1216890-42-4)
- Ondansetron-d5 (CAS 1219798-86-3)
- Ondansetron Impurity 16 (CAS 126671-72-5)
- Ondansetron Impurity 13 (CAS 126671-73-6)
Recommended Standards
- Tranexamic Impurity 42 (CAS CATO-C4X-177142)
- Doxycycline Impurity 21 (CAS CATO-C4X-193121)
- Podophyllotoxin EP Impurity C (CAS 477-49-6)
- tert-butyl N-[(1R,2S)-2-hydroxycyclohexyl]carbamate (CAS 291533-28-3)
- 5-Methoxy-3-methyl-2-phenyl-1H-indole (CAS 64648-65-3)
- (E)-Hexa-1,3-diene (CAS 20237-34-7)
- 5-Amino-1,4-dimethylimidazole Hydrochloride (CAS 1427475-33-9)
- 3-Chloro-2-methyl-5-(thiophen-2-yl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine (CAS 439120-56-6)
- 1-(2,4-Dimethylphenyl)-3-(m-tolyl)propan-1-one (CAS 898790-72-2)
- Tirzepatide Impurity 26 X TFA Salt (CAS CATO-C4X-324026)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com