Lurbinectedin Impurity 35 CAS CATO-C4X-311435
| CAS No. | CATO-C4X-311435 |
| Molecular Formula | C41H44N4O10S |
| Molecular Weight | 784.87 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Lurbinectedin Impurity 35.
Lurbinectedin Impurity 35 (CAS CATO-C4X-311435) is a certified pharmaceutical impurity reference standard with the molecular formula C41H44N4O10S and a molecular weight of 784.87 g/mol.
The molecular framework of Lurbinectedin Impurity 35 (C41H44N4O10S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone 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).
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 | C41H44N4O10S |
| Molecular Weight | 784.87 g/mol |
| Purity | 95% |
| Storage | Store in a cool place (≤25°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) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Lurbinectedin Standards
- Lurbinectedin (CAS 497871-47-3)
- Lurbinectedin Impurity 27 (CAS 2749898-64-2)
- Lurbinectedin Impurity 37 (CAS CATO-C4X-311437)
- Lurbinectedin Impurity 15 (CAS 2248127-59-3)
- Lurbinectedin Impurity 17 (CAS 2248127-63-9)
- Lurbinectedin Impurity 16 (CAS 497871-81-5)
- Lurbinectedin Impurity 10 (CAS CATO-C4X-311410)
- Lurbinectedin Impurity 2 (CAS 497871-10-0)
Recommended Standards
- Cefathiamidine Dimer impurity 23 (CAS CATO-C4X-133723)
- Olmesartan Impurity 101 (CAS CATO-C4X-1097101)
- Cefathiamidine Dimer Impurity 24 (CAS CATO-C4X-133724)
- Azilsartan Impurity 151 (CAS 1454318-14-9)
- Ursodeoxycholic Acid impurity 75 (CAS 1516887-32-3)
- Fluticasone Impurity 51 (CAS CATO-C4X-165051)
- LCZ-696 Impurity 5 (CAS 1038924-70-7)
- tert-Butyl 3-ethynyl-3-fluoropiperidine-1-carboxylate (CAS 1434142-27-4)
- 4-[(2,4-Dichlorophenyl)sulfanyl]-N-ethyl-6-(trifluoromethyl)pyrimidin-2-amine (CAS 339011-07-3)
- (R)-(1-((4-bromophenyl)sulfonyl)pyrrolidin-2-yl)methanol (CAS 936727-80-9)
- 3-(3-chloro-2-cyanophenoxy)benzoic acid (CAS 93188-82-0)
- (3,5-Bis(prop-2-yn-1-yloxy)phenyl)methanol (CAS 176038-84-9)
- 4-Methyl-N-(2-(piperazin-1-yl)ethyl)thiazole-5-carboxamide hydrochloride (CAS 1593114-55-6)
- Semaglutide impurity 227 (CAS CATO-C4X-2226227)
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