Tamsulosin Impurity 19 CAS 116091-63-5
| CAS No. | 116091-63-5 |
| Molecular Formula | C10H13NO4S |
| Molecular Weight | 243.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Tamsulosin Impurity 19 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.
As a process- or degradation-related impurity, Tamsulosin Impurity 19 (CAS 116091-63-5, C10H13NO4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Tamsulosin Impurity 19 (C10H13NO4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 243.28 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Tamsulosin Standards
- Tamsulosin Impurity 70 (CAS CATO-C4X-118770)
- 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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- 2-(2,4-Dichlorophenyl)-1-(4-methoxyphenyl)ethan-1-one (CAS 153529-19-2)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
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