Tamsulosin Impurity 29 CAS 136383-33-0
| CAS No. | 136383-33-0 |
| Molecular Formula | C10H12Br2O2 |
| Molecular Weight | 324.01 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Tamsulosin Impurity 29 (CAS 136383-33-0), a pharmacopoeial impurity reference standard (molecular formula C10H12Br2O2, MW 324.01 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C10H12Br2O2, Tamsulosin Impurity 29 contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 324.01 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C10H12Br2O2 |
| Molecular Weight | 324.01 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Br-containing |
Related Tamsulosin Standards
- Tamsulosin Impurity 47 (CAS CATO-C4X-118747)
- Tamsulosin EP Impurity H (CAS 1329611-47-3)
- Tamsulosin Impurity N1 (CAS 858583-36-5)
- Tamsulosin Impurity 51 (CAS CATO-C4X-118751)
- Tamsulosin Impurity 43 (CAS CATO-C4X-118743)
- Tamsulosin Impurity 13 (CAS 35193-64-7)
- Tamsulosin Impurity 59 (CAS 1073231-99-8)
- Tamsulosin Impurity 60 (CAS 1537178-25-8)
Recommended Standards
- 1,3-Bis(2-bromoethoxy)benzene 58929-74-1 6245AE C10H12Br2O2 (CAS 58929-74-1)
- 1-(5-Bromo-2-(trifluoromethyl)pyridin-4-yl)-2,2,2-trifluoroethanol (CAS 1375303-18-6)
- Pinaverium Impurity 7 (CAS 26726-81-8)
- 2-(6-Bromopyridin-3-yl)-1,1,1,3,3,3-hexafluoropropan-2-ol (CAS 1446407-06-2)
- Roxadustat Impurity 1 (CAS 2301113-15-3)
- Semaglutide impurity 290 (CAS CATO-C4X-2226290)
- Cholic Acid Impurity 47 (CAS 135013-44-4)
- [1-(4-methylphenyl)-1h-pyrazol-3-yl]methanol (CAS 1498746-69-2)
- (S)-3-Ethoxy-3-(4-(((R)-4-(trifluoromethyl)-2,3-dihydro-1h-inden-1-yl)oxy)phenyl)propanoic acid (CAS 1202575-67-4)
- Methyl 2-(chloromethyl)-6-cyanonicotinate (CAS 1774904-01-6)
- Dicyclohexyl(2′,4′-dimethoxy[1,1′-biphenyl]-2-yl)phosphine (CAS 1378030-15-9)
- N-(6-Amino-3-butyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)cyclopentanecarboxamide (CAS 524944-62-5)
- 1-(4-Nitrophenyl)piperidine-2-carboxylic acid (CAS 1103838-83-0)
- Semaglutide Impurity 131 (CAS 2618647-80-4)
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