Benserazide EP impurity B CAS 2472968-83-3
| CAS No. | 2472968-83-3 |
| Molecular Formula | C17H21N3O8 |
| Molecular Weight | 395.36 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 Benserazide EP impurity B (CAS 2472968-83-3), a pharmacopoeial impurity reference standard (molecular formula C17H21N3O8, MW 395.36 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Benserazide EP impurity B (C17H21N3O8) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C17H21N3O8 |
| Molecular Weight | 395.36 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Nitrogen Atoms | 3 |
Related Benserazide Standards
- Benserazide Impurity 15 (CAS CATO-C4X-142715)
- Benserazide impurity 35 (CAS CATO-C4X-142735)
- Benserazide Impurity 9 (CAS CATO-C4X-14279)
- Benserazide Impurity 44 (CAS CATO-C4X-142744)
- Benserazide impurity 51 (CAS CATO-C4X-142751)
- Benserazide impurity 39 (CAS CATO-C4X-142739)
- Benserazide impurity 45 (CAS CATO-C4X-142745)
- Benserazide impurity 52 (CAS CATO-C4X-142752)
Recommended Standards
- 3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2,6-difluorobenzoic acid (CAS 1872019-51-6)
- 2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3,5-difluorobenzoic acid (CAS 2243515-56-0)
- Cangrelor Impurity 5 (CAS 163706-51-2)
- 2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3,6-difluorobenzoic acid (CAS 2243507-97-1)
- ZHC-116 Impurity 7 (CAS CATO-C4X-23887)
- Famotidine Impurity 48 (CAS CATO-C4X-139248)
- Finerenone Impurity 15 (CAS 3046142-41-7)
- Z-Orn(Boc)-OH (CAS 7733-29-1)
- 3-(Chloromethyl)-1-methyl-5-(thiophen-2-yl)-1H-pyrazole (CAS 876316-61-9)
- 3,3-Dimethyl-2-oxobutanenitrile (CAS 42867-40-3)
- Benzyl 6-bromo-3,4-dihydroquinoline-1(2H)-carboxylate (CAS 1881295-82-4)
- 1-(2,4-dihydroxy-6-methoxy-3-methylphenyl)-3-(4-methoxyphenyl)prop-2-en-1-one (CAS 109471-13-8)
- 6-Chloro-4-hydroxy-1-methylpyrimidin-2(1H)-one (CAS 77139-94-7)
- Semaglutide impurity 200 (CAS CATO-C4X-2226200)
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