Doxorubicin Impurity 36 CAS CATO-C4X-203336
| CAS No. | CATO-C4X-203336 |
| Molecular Formula | C21H16O8 |
| Molecular Weight | 396.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO supplies Doxorubicin Impurity 36 (CAS CATO-C4X-203336), a pharmacopoeial impurity reference standard (molecular formula C21H16O8, MW 396.35 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, Doxorubicin Impurity 36 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 396.35 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).
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 | C21H16O8 |
| Molecular Weight | 396.35 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 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 |
Related Doxorubicin Standards
- Doxorubicin Impurity 24 (CAS CATO-C4X-203324)
- Doxorubicin Dimer Impurity 17 (CAS 59325-98-3)
- Doxorubicin Impurity 5 (CAS 1159977-23-7)
- Doxorubicin Impurity 39 (Mixture of Diastereomers) (CAS 210837-87-9)
- Doxorubicin Impurity 14 (CAS CATO-C4X-203314)
- Doxorubicin Impurity 7 (CAS 105612-58-6)
- Doxorubicin Impurity 8 (CAS 20982-41-6)
- Doxorubicin Impurity 6 (CAS 32384-98-8)
Recommended Standards
- Vericiguat Impurity 67 (CAS 2755814-39-0)
- Etoposide EP Impurity P (CAS 117669-31-5)
- Selumetinib Impurity 7 (CAS CATO-C4X-30537)
- Diacerein Impurity 8 (CAS 6030-60-0)
- Lefamulinum Impurity 1 (CAS CATO-C4X-30471)
- Thiamine Impurity 30 (CAS 100502-51-0)
- Atrasentan Impurity 171 (CAS 1059051-90-9)
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- 2',3'-Dichloro-2,2,2-trifluoroacetophenone (CAS 886371-11-5)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com