Tamsulosin Impurity 7 CAS 121565-95-5
| CAS No. | 121565-95-5 |
| Molecular Formula | C20H28N2O5S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 444.97 g/mol gives Tamsulosin Impurity 7 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Tamsulosin Impurity 7 (CAS 121565-95-5), a certified reference material (molecular formula C20H28N2O5SHCl, MW 444.97 g/mol) for analytical method development and quality control.
The molecular framework of Tamsulosin Impurity 7 (C20H28N2O5SHCl) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C20H28N2O5S HCl |
| Molecular Weight | 444.97 g/mol |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Tamsulosin Standards
- Tamsulosin Impurity 68 (CAS 1027854-97-2)
- Tamsulosin EP Impurity F HCl (CAS 1051368-80-9)
- Tamsulosin EP Impurity E (CAS 105764-07-6)
- (R)-Tamsulosin (CAS 106133-20-4)
- Tamsulosin EP Impurity G (CAS 106138-88-9)
- Tamsulosin Hydrochloride (CAS 106463-17-6)
- Tamsulosin EP Impurity G HCl (CAS 106463-19-8)
- Tamsulosin Impurity 59 (CAS 1073231-99-8)
Recommended Standards
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- (S)-Methyl 2-acetamido-3-(2,5-difluorophenyl)propanoate (CAS 1956437-45-8)
- (E)-2-phenyl-2-(piperidin-2-ylidene)acetonitrile (CAS 72223-09-7)
- 8-Methoxy-6-nitroquinoline (CAS 80912-11-4)
- 1-(Tert-butoxycarbonyl)indoline-4-carboxylic acid (CAS 208774-11-2)
- 2,5-Furandione, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 3a,4,7,7a-tetrahydro-4,7-methano-1H-indene (CAS 72018-14-5)
- 3-Chloro-2-(1H-pyrazol-4-yl)-5-(trifluoromethyl)pyridine (CAS 246022-25-3)
- C-telopeptide (CAS 162929-64-8)
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