Tamoxifen Impurity 26 CAS CATO-C4X-123326
| CAS No. | CATO-C4X-123326 |
| Molecular Formula | C17H19NO2 |
| Molecular Weight | 269.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Tamoxifen Impurity 26 (CAS CATO-C4X-123326), a pharmacopoeial impurity reference standard (molecular formula C17H19NO2, MW 269.34 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Tamoxifen Impurity 26 (C17H19NO2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), Tamoxifen Impurity 26 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 | C17H19NO2 |
| Molecular Weight | 269.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Tamoxifen Standards
- Tamoxifen Impurity 18 (CAS 123091-15-6)
- Tamoxifen Citrate Impurity 9 (CAS 69967-80-2)
- Tamoxifen Impurity 30 (CAS CATO-C4X-123330)
- Tamoxifen Impurity 20 (CAS CATO-C4X-123320)
- Tamoxifen Impurity 22 (CAS CATO-C4X-123322)
- Tamoxifen EP Impurity G (CAS 68047-07-4)
- Tamoxifen Impurity 21 (CAS CATO-C4X-123321)
- Tamoxifen Impurity 25 (CAS CATO-C4X-123325)
Recommended Standards
- Posaconazole Impurity 77 (CAS 74853-08-0)
- Pregabalin impurity 108 (CAS CATO-C4X-1312108)
- Posaconazole Impurity 81 (CAS CATO-C4X-1208181)
- Galantamine EP Impurity D (CAS 664995-65-7)
- Metoclopramide Impurity 117 (CAS CATO-C4X-1415117)
- N-Nitroso Cinacalcet Impurity 3 (CAS CATO-C4X-105973)
- Bupropion Impurity 71 (CAS 102141-12-8)
- 5-Ethyl-4-phenylpyrimidin-2-amine (CAS 61541-79-5)
- N-(4-(Methoxymethyl)-2-oxo-1,2-dihydroquinolin-7-yl)-2-phenylthiazole-4-carboxamide (CAS 1251687-12-3)
- Quetiapine EP Impurity D (CAS 945668-94-0)
- Azetidin-3-yl 2,2,2-trichloroacetate (CAS 1219956-76-9)
- Benzyl 2-(2-(tert-butylthio)pyridin-3-yl)pyrrolidine-1-carboxylate (CAS 1352529-15-7)
- 2,3-Dihydro-1-benzofuran-3-carboxamide (CAS 1343275-28-4)
- Adrenal Peptide E, bovine (CAS 78355-50-7)
Why CATO?
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