Tamsulosin Impurity 18 CAS CATO-C4X-118718
| CAS No. | CATO-C4X-118718 |
| Molecular Formula | C9H11NO4S |
| Molecular Weight | 229.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Tamsulosin Impurity 18 (C9H11NO4S) 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 229.25 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, Tamsulosin Impurity 18 (CAS CATO-C4X-118718, C9H11NO4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
As a certified reference material (CRM), Tamsulosin Impurity 18 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 | C9H11NO4S |
| Molecular Weight | 229.25 g/mol |
| Purity | 97%+ |
| 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 31 (CAS 4463-59-6)
- Tamsulosin Impurity 16 (CAS 21003-56-5)
- Tamsulosin Impurity 17 (CAS 21003-57-6)
- Tamsulosin Impurity 77 (CAS 1510621-28-9)
- Tamsulosin Impurity 15 (CAS 92119-04-5)
- Tamsulosin Impurity 28 (CAS 1495375-67-1)
- Tamsulosin EP Impurity E (CAS 105764-07-6)
- Tamsulosin Impurity 19 (CAS 116091-63-5)
Recommended Standards
- 2-(2-HYDROXY-1,1-DIHYDROXYMETHYL-ETHYLAMINO)-ETHANESULFONIC ACID 2-(tris(hydroxymethyl)methylamino)ethane-1-sulphonic acid 2-{[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]amino}ethanesulfonic acid 7365-44-8 CHEBI:44356 N-Tris[hydroxymethyl]methyl-2-aminoethanesulfonic acid N-tri(hydroxymethyl)methyltaurine N-tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid TES TES buffer tris(hydroxymethyl)methyl-2-aminomethane sulfonic acid (CAS 7365-44-8)
- Lapatinib Impurity 40 (CAS CATO-C4X-119140)
- 404964-28-9 Benzoic acid, 4-amino-3-(methylsulfonyl)-, methyl ester CTK1C9533 (CAS 404964-28-9)
- Carbazochrome Impurity 11 (CAS CATO-C4X-229111)
- Esmolol Impurity 93 (CAS CATO-C4X-189193)
- Apalutamide Impurity 78 (CAS CATO-C4X-274978)
- Sodium Valproate Impurity 15 (CAS 2163-48-6)
- 7-(Difluoromethyl)-5-(4-methoxyphenyl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (CAS 492434-20-5)
- 2-Cyclopropoxy-5-methylbenzonitrile (CAS 1243447-94-0)
- 2-(Butylthio)-1-(p-tolyl)ethan-1-one (CAS 1157302-44-7)
- 3-Methyl-4-morpholino-2,2-diphenylbutanamide (CAS 7577-18-6)
- N-methyl-2-phenoxyethanamine (CAS 37421-04-8)
- n-((2,3-Dihydrobenzofuran-5-yl)methyl)propan-1-amine (CAS 1157542-94-3)
- (D-His1)-Exenatide trifluoroacetate salt (CAS 1678417-09-8)
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