Doxorubicin Impurity 28 CAS CATO-C4X-203328
| CAS No. | CATO-C4X-203328 |
| Molecular Formula | C28H31NO11 |
| Molecular Weight | 557.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 557.55 g/mol gives Doxorubicin Impurity 28 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Doxorubicin Impurity 28 (CAS CATO-C4X-203328) is a certified pharmaceutical impurity reference standard with the molecular formula C28H31NO11 and a molecular weight of 557.55 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Doxorubicin Impurity 28 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 557.55 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Doxorubicin Impurity 28 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 | C28H31NO11 |
| Molecular Weight | 557.55 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Doxorubicin Standards
- Doxorubicin Impurity 33 (CAS CATO-C4X-203333)
- Doxorubicin Impurity 9 (CAS CATO-C4X-20339)
- Doxorubicin (CAS 23214-92-8)
- Doxorubicin Impurity 20 (CAS CATO-C4X-203320)
- Doxorubicin Impurity 29 (CAS CATO-C4X-203329)
- Doxorubicin Impurity 3 (CAS 69429-21-6)
- Doxorubicin Impurity 34 (CAS CATO-C4X-203334)
- Doxorubicin Impurity 26 (CAS CATO-C4X-203326)
Recommended Standards
- Tigecycline Impurity 32 (CAS CATO-C4X-186032)
- (3α,5β,6α,7α)-6-Bromo-3-[(ethoxycarbonyl)oxy]-7-hydroxycholan-24-oic Acid Methyl Ester (CAS 125112-74-5)
- Cefdinir Impurity 88 (CAS CATO-C4X-121088)
- Cefminox Impurity 35 (CAS CATO-C4X-192635)
- Lefamulinum Impurity 18 (CAS CATO-C4X-304718)
- Rosuvastatin Impurity 136 (CAS 890028-66-7)
- Difelikefalin Impurity 75 (CAS CATO-C4X-304175)
- 6-Chloro-2,4,7-trimethyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 14352-34-2)
- 6-Chloro-1H,2H,3H-pyrrolo[3,4-c]pyridine (CAS 905273-90-7)
- Methyl 4-cyanobenzoate (CAS 1129-35-7)
- 1-Butyl-4-iodo-3-methyl-1H-pyrazol-5-amine (CAS 1248805-32-4)
- 1,3,2-Dioxaphosphorinane, 2,2'-[(2,2-dimethyl-1,3-propanediyl)bis(oxy)]bis[5,5-dimethyl-, 2,2'-dioxide (CAS 70942-40-4)
- 6-Fluoro-4-formylpyridine-2-sulfonyl chloride (CAS 1393530-71-6)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
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