Tamsulosin Impurity 70 CAS CATO-C4X-118770
| CAS No. | CATO-C4X-118770 |
| Molecular Formula | C10H13NO4S |
| Molecular Weight | 243.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C10H13NO4S, Tamsulosin Impurity 70 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 243.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Tamsulosin Impurity 70 (CAS CATO-C4X-118770), a pharmacopoeial impurity reference standard (molecular formula C10H13NO4S, MW 243.28 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.
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 | C10H13NO4S |
| Molecular Weight | 243.28 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Tamsulosin Standards
- Tamsulosin Impurity 19 (CAS 116091-63-5)
- Tamsulosin Impurity 71 (CAS CATO-C4X-118771)
- Tamsulosin Impurity 72 (CAS CATO-C4X-118772)
- Tamsulosin Impurity 73 (CAS CATO-C4X-118773)
- Tamsulosin Impurity 41 (CAS CATO-C4X-118741)
- Tamsulosin Impurity 32 (CAS 112244-38-9)
- Tamsulosin EP Impurity B (CAS 112101-81-2)
- Tamsulosin Impurity 44 (CAS 119714-13-5)
Recommended Standards
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- Pethidine EP Impurity B HCl (CAS 23007-85-4)
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- 5-chloro-2-(6-chloropyridin-3-yl)-1H-benzo[d]imidazole (CAS 337920-73-7)
- 3-(Furan-2-yl)-2-(4-nitrophenyl)propanenitrile (CAS 1254177-56-4)
- Ammonium iodide (CAS 12027-06-4)
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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