Warfarin EP Impurity B CAS 1076-38-6
| CAS No. | 1076-38-6 |
| Molecular Formula | C9H6O3 |
| Molecular Weight | 162.14 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 Warfarin EP Impurity B (CAS 1076-38-6), a pharmacopoeial impurity reference standard (molecular formula C9H6O3, MW 162.14 g/mol) used for the identification and quantification of trace impurities in APIs.
Warfarin EP Impurity B (C9H6O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H6O3 |
| Molecular Weight | 162.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Warfarin Standards
- Warfarin EP Impurity C (CAS 1896-62-4)
- Warfarin impurity 12 (CAS CATO-C4X-17812)
- Warfarin Impurity 11 (CAS CATO-C4X-178111)
- Warfarin sodium EP Impurity A (CAS 15156-56-6)
- Warfarin impurity 18 (CAS CATO-C4X-17818)
- Warfarin Impurity N1 (CAS 2514748-07-1)
- Warfarin Impurity N2 (CAS 15151-14-1)
- Warfarin Impurity 7 (CAS 67588-18-5)
Recommended Standards
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- 1,6-Anhydro-β-D-glucofuranose (CAS 7425-74-3)
- Losartan Impurity 59 (CAS 57246-71-6)
- Prednisone Impurity 15 (CAS 115097-56-8)
- Dobutamine Impurity 14 (CAS 61413-41-0)
- 3-(3-Bromo-4-fluorophenyl)-3-methylbutan-2-one (CAS 1239964-09-0)
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- D-[Ser]8-Semaglutide (CAS CATO-CPTD788632)
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