Daunorubicin EP Impurity B ((S)-Isomer) CAS 28008-55-1
| CAS No. | 28008-55-1 |
| Molecular Formula | C27H31NO10 |
| Molecular Weight | 529.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Daunorubicin EP Impurity B ((S)-Isomer) (C27H31NO10) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 529.54 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Daunorubicin EP Impurity B ((S)-Isomer) (CAS 28008-55-1), a pharmacopoeial impurity reference standard (molecular formula C27H31NO10, MW 529.54 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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 | C27H31NO10 |
| Molecular Weight | 529.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 1 |
Related Daunorubicin Standards
- Daunorubicin impurity 13 (Mixture of Epimer) (CAS CATO-C4X-193713)
- Daunorubicin Impurity 15 (CAS 952648-77-0)
- Daunorubicin EP Impurity B (Mixture of Diastereomers) (CAS CATO-C4X-19372)
- epi-Daunorubicin (CAS 57918-24-8)
- 3-epi-Daunorubicin (CAS 66322-65-4)
- Daunorubicin impurity 14 (CAS CATO-C4X-193714)
- Daunorubicin EP Impurity C (CAS 79438-97-4)
- Daunorubicin HCl EP Impurity F (CAS 771423-67-7)
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- N-Notroso Minocycline impurity 78 (CAS CATO-C4X-169978)
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- (2-fluoro-4-phenoxyphenyl)boronic acid (CAS 1414356-30-1)
- Dimethyl-[2-methyl-6-(4-methyl-piperidin-4-yl)-pyrimidin-4-yl]-amine (CAS 1316218-95-7)
- 6-Bromo-5-(difluoromethyl)-4-hydroxypicolinic acid (CAS 1804652-86-5)
- N2,N4-Diethyl-6-hydrazinyl-1,3,5-triazine-2,4-diamine (CAS 10421-98-4)
- D-Asp9-Tirzepatide (CAS CATO-CPTD788923)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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