Warfarin impurity 13 CAS CATO-C4X-17813
| CAS No. | CATO-C4X-17813 |
| Molecular Formula | C21H22O4 |
| Molecular Weight | 338.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Warfarin impurity 13 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.
Warfarin impurity 13 (CAS CATO-C4X-17813) is a certified pharmaceutical impurity reference standard with the molecular formula C21H22O4 and a molecular weight of 338.40 g/mol.
Based on its molecular formula C21H22O4, Warfarin impurity 13 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 338.40 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C21H22O4 |
| Molecular Weight | 338.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Warfarin Standards
- Warfarin Impurity 12 (CAS CATO-C4X-142912)
- Warfarin Impurity 14 (CAS 464921-27-5)
- Warfarin Impurity 16 (CAS CATO-C4X-142916)
- Warfarin Impurity 17 (CAS CATO-C4X-142917)
- Warfarin Impurity 10 (CAS 63740-75-0)
- Warfarin Impurity 12 (CAS 63740-82-9)
- Warfarin Impurity 9 (CAS 63740-77-2)
- Warfarin impurity 16 (CAS CATO-C4X-17816)
Recommended Standards
- Oseltamivir Impurity 246 (CAS CATO-C4X-1720246)
- Trimetazidine EP Impurity H (CAS 53531-01-4)
- Oseltamivir Impurity 162 (CAS CATO-C4X-1720162)
- Lacosamide Impurity 31 (CAS 1629130-53-5)
- Palbociclib Impurity 80 (CAS CATO-C4X-112580)
- Eravacycline impurity 14 (CAS CATO-C4X-293814)
- Decitabine Impurity 35 (CAS 896451-03-9)
- Nemonoxacin Impurity 44 (CAS CATO-C4X-312844)
- 3-(4-Carboxy-3-fluorophenyl)benzoic acid (CAS 1261915-32-5)
- (4-Methylchroman-4-yl)methanamine (CAS 1485459-52-6)
- 4-Methyl-2-[(2-phenylethyl)amino]pyrimidine-5-carboxylic acid (CAS 1188977-51-6)
- 1-(2,4-Dihydroxy-3,6-dimethoxyphenyl)-3-phenylpropan-1-one (CAS 54299-52-4)
- 6,8-Dichloropyrido[3,4-d]pyrimidin-4(3H)-one (CAS 2368909-25-3)
- Semaglutide impurity 80 (CAS CATO-C4X-222680)
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