Silodosin Impurity 11 CAS 160969-03-9
| CAS No. | 160969-03-9 |
| Molecular Formula | C11H13F3O5S |
| Molecular Weight | 314.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Silodosin Impurity 11 (CAS 160969-03-9) is a high-purity analytical reference standard with the molecular formula C11H13F3O5S and a molecular weight of 314.28 g/mol.
Structurally, Silodosin Impurity 11 (C11H13F3O5S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 314.28 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H13F3O5S |
| Molecular Weight | 314.28 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; 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.) | 2002 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Silodosin Standards
- Silodosin impurity 26 (CAS CATO-C4X-175426)
- Silodosin Impurity 30 (CAS 1639265-45-4)
- Silodosin Keto Impurity (CAS 350797-57-8)
- Silodosin S-amine Isomer (CAS 1201180-97-3)
- Silodosin impurity N1 (CAS 1338365-54-0)
- Silodosin Impurity 22 (CAS 239463-72-0)
- Silodosin Impurity 20 (CAS 1375180-28-1)
- Silodosin Impurity 29 (CAS 1251924-67-0)
Recommended Standards
- (4-Iodobutoxy)-t-butyldimethylsilane 92511-12-1 tert-butyl(4-iodobutoxy)dimethylsilane (CAS 92511-12-1)
- 2-Methoxycarbonylphenyl β-D-glucopyranoside (CAS 10019-60-0)
- 2-(phenylselanyl)isoindoline-1,3-dione 71098-88-9 N-(Phenylseleno)phthalimide (CAS 71098-88-9)
- Ladanein (CAS 10176-71-3)
- 4-(3-Iodobenzoyl)phenyl acetate (CAS 890099-50-0)
- (5-Bromo-2-ethoxypyridin-4-yl)methanol (CAS 1864472-38-7)
- 4-(2-Cyclopropyl-2-oxoethoxy)-N-((5-methyl-1,3,4-oxadiazol-2-yl)methyl)benzamide (CAS 1226437-80-4)
- 2-(2-Ethyl-1,3-thiazol-4-yl)Ethylamine (CAS 1171521-15-5)
- trans-3-(Boc-amino)-4-(trifluormethyl)piperidine (CAS 1363378-16-8)
- 4,5-Dichloro-6-methyl-2-(pyridin-3-yl)pyrimidine (CAS 681260-51-5)
- 4-(6-Bromopyridin-3-yl)-1-azabicyclo[2.2.1]heptane (CAS 1238104-52-3)
- 3-Acetyl-6-methylpyridazine-4-carboxamide (CAS 445458-19-5)
- 3-(Methoxycarbonyl)-1,1-dimethylpiperidin-1-ium bromide (CAS 60296-01-7)
- Semaglutide impurity 86 (CAS CATO-C4X-152686)
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