Silodosin Impurity 17 CAS 160968-99-0
| CAS No. | 160968-99-0 |
| Molecular Formula | C8H7F3O2 |
| Molecular Weight | 192.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Silodosin Impurity 17 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.
CATO supplies Silodosin Impurity 17 (CAS 160968-99-0), a pharmacopoeial impurity reference standard (molecular formula C8H7F3O2, MW 192.14 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, Silodosin Impurity 17 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 192.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C8H7F3O2 |
| Molecular Weight | 192.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 2002 |
| Halogen Content | F-containing |
Related Silodosin Standards
- Silodosin Impurity 25 (CAS 1096141-53-5)
- Silodosin Impurity 18 (CAS 160969-02-8)
- Silodosin Impurity 29 (CAS 1251924-67-0)
- Silodosin impurity 26 (CAS CATO-C4X-175426)
- Silodosin Impurity 11 (CAS 160969-03-9)
- Silodosin Impurity 30 (CAS 1639265-45-4)
- Silodosin Keto Impurity (CAS 350797-57-8)
- Silodosin S-amine Isomer (CAS 1201180-97-3)
Recommended Standards
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- AF3HZ0ZAN4 4411-80-7 6,6'-Bi-2-picoline 2,2'-Bipyridine, 6,6'-dimethyl- 6,6'-Dimethyl-2,2'-bipyridine 5-23-08-00081 (Beilstein Handbook Reference) BRN 0128972 EINECS 224-566-5 NSC 4705 UNII-AF3HZ0ZAN4 (CAS 4411-80-7)
- 2-nitrobenzo[d]oxazole-4-carbonitrile (CAS 1803832-26-9)
- Ethyl 2-(methylamino)-4-(trifluoromethyl)thiazole-5-carboxylate (CAS 1280787-22-5)
- 2-(pyridin-3-yloxy)acetamide (CAS 933979-12-5)
- (10-31)Semaglutide (CAS CATO-C4X-2226283)
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