Bendamustine Impurity 25 CAS 3543-76-8
| CAS No. | 3543-76-8 |
| Molecular Formula | C15H19N3O4 |
| Molecular Weight | 305.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Bendamustine Impurity 25 (C15H19N3O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 305.33 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 Bendamustine Impurity 25 (CAS 3543-76-8), a pharmacopoeial impurity reference standard (molecular formula C15H19N3O4, MW 305.33 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.
As a certified reference material (CRM), Bendamustine Impurity 25 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 | C15H19N3O4 |
| Molecular Weight | 305.33 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Related Bendamustine Standards
- Bendamustine Nitro Isopropyl Ester Impurity (CAS 1374784-01-6)
- Bendamustine Impurity 27 (CAS 1366085-72-4)
- Bendamustine Impurity 13 (CAS 1228552-02-0)
- Bendamustine Nitro Ethyl Ester Impurity (CAS 3543-72-4)
- Bendamustine USP Related Compound A (CAS 109882-30-6)
- Bendamustine Impurity 35 (CAS CATO-C4X-127135)
- Bendamustine Impurity 25 (CAS 91644-13-2)
- Bendamustine Impurity 37 (CAS CATO-C4X-127137)
Recommended Standards
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- 6-(Aminomethyl)isoquinolin-1(2H)-one (CAS 1374651-53-2)
- Nintedanib Impurity 46 (CAS 99846-70-5)
- Tert-butyl (2S,3R)-3-(4-chlorophenyl)aziridine-2-carboxylate (CAS 1416307-75-9)
- 2-Methyl-4-(thiophen-2-yl)pyrimidine (CAS 154321-62-7)
- Neuroendocrine Regulatory Peptide-1 (rat) (CAS 954420-51-0)
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